CupertinoDynamicColor improvements (#44317)

examples/flutter_gallery/lib/demo/cupertino/cupertino_refresh_demo.dart

@@ -165,11 +165,11 @@ class _ListItem extends StatelessWidget {
           Container(
             width: 38.0,
             child: called
-                ? const Align(
+                ? Align(
                     alignment: Alignment.topCenter,
                     child: Icon(
                       CupertinoIcons.phone_solid,
-                      color: CupertinoColors.inactiveGray,
+                      color: CupertinoColors.inactiveGray.resolveFrom(context),
                       size: 18.0,
                     ),
                   )
@@ -203,10 +203,10 @@ class _ListItem extends StatelessWidget {
                           place,
                           maxLines: 1,
                           overflow: TextOverflow.ellipsis,
-                          style: const TextStyle(
+                          style: TextStyle(
                             fontSize: 15.0,
                             letterSpacing: -0.24,
-                            color: CupertinoColors.inactiveGray,
+                            color: CupertinoColors.inactiveGray.resolveFrom(context),
                           ),
                         ),
                       ],
@@ -214,8 +214,8 @@ class _ListItem extends StatelessWidget {
                   ),
                   Text(
                     date,
-                    style: const TextStyle(
-                      color: CupertinoColors.inactiveGray,
+                    style: TextStyle(
+                      color: CupertinoColors.inactiveGray.resolveFrom(context),
                       fontSize: 15.0,
                       letterSpacing: -0.41,
                     ),

packages/flutter/lib/src/cupertino/app.dart

@@ -289,7 +289,7 @@ class _CupertinoAppState extends State<CupertinoApp> {
                 builder: widget.builder,
                 title: widget.title,
                 onGenerateTitle: widget.onGenerateTitle,
-                textStyle: effectiveThemeData.textTheme.textStyle,
+                textStyle: CupertinoTheme.of(context).textTheme.textStyle,
                 color: CupertinoDynamicColor.resolve(widget.color ?? effectiveThemeData.primaryColor, context),
                 locale: widget.locale,
                 localizationsDelegates: _localizationsDelegates,

packages/flutter/lib/src/cupertino/bottom_tab_bar.dart

@@ -16,10 +16,7 @@ const Color _kDefaultTabBarBorderColor = CupertinoDynamicColor.withBrightness(
   color: Color(0x4C000000),
   darkColor: Color(0x29000000),
 );
-const Color _kDefaultTabBarInactiveColor = CupertinoDynamicColor.withBrightness(
-  color: Color(0xFF999999),
-  darkColor: Color(0xFF757575),
-);
+const Color _kDefaultTabBarInactiveColor = CupertinoColors.inactiveGray;
 
 /// An iOS-styled bottom navigation tab bar.
 ///

packages/flutter/lib/src/cupertino/colors.dart

@@ -79,7 +79,8 @@ class CupertinoColors {
   /// Not the same grey as disabled buttons etc.
   ///
   /// This is the disabled color in the iOS palette.
-  static const Color inactiveGray = CupertinoDynamicColor.withBrightness(
+  static const CupertinoDynamicColor inactiveGray = CupertinoDynamicColor.withBrightness(
+    debugLabel: 'inactiveGray',
     color: Color(0xFF999999),
     darkColor: Color(0xFF757575),
   );
@@ -100,6 +101,7 @@ class CupertinoColors {
   /// * [UIColor.systemBlue](https://developer.apple.com/documentation/uikit/uicolor/3173141-systemblue),
   ///   the `UIKit` equivalent.
   static const CupertinoDynamicColor systemBlue = CupertinoDynamicColor.withBrightnessAndContrast(
+    debugLabel: 'systemBlue',
     color: Color.fromARGB(255, 0, 122, 255),
     darkColor: Color.fromARGB(255, 10, 132, 255),
     highContrastColor: Color.fromARGB(255, 0, 64, 221),
@@ -113,6 +115,7 @@ class CupertinoColors {
   /// * [UIColor.systemGreen](https://developer.apple.com/documentation/uikit/uicolor/3173144-systemgreen),
   ///   the `UIKit` equivalent.
   static const CupertinoDynamicColor systemGreen = CupertinoDynamicColor.withBrightnessAndContrast(
+    debugLabel: 'systemGreen',
     color: Color.fromARGB(255, 52, 199, 89),
     darkColor: Color.fromARGB(255, 48, 209, 88),
     highContrastColor: Color.fromARGB(255, 36, 138, 61),
@@ -126,6 +129,7 @@ class CupertinoColors {
   /// * [UIColor.systemIndigo](https://developer.apple.com/documentation/uikit/uicolor/3173146-systemindigo),
   ///   the `UIKit` equivalent.
   static const CupertinoDynamicColor systemIndigo = CupertinoDynamicColor.withBrightnessAndContrast(
+    debugLabel: 'systemIndigo',
     color: Color.fromARGB(255, 88, 86, 214),
     darkColor: Color.fromARGB(255, 94, 92, 230),
     highContrastColor: Color.fromARGB(255, 54, 52, 163),
@@ -139,6 +143,7 @@ class CupertinoColors {
   /// * [UIColor.systemOrange](https://developer.apple.com/documentation/uikit/uicolor/3173147-systemorange),
   ///   the `UIKit` equivalent.
   static const CupertinoDynamicColor systemOrange = CupertinoDynamicColor.withBrightnessAndContrast(
+    debugLabel: 'systemOrange',
     color: Color.fromARGB(255, 255, 149, 0),
     darkColor: Color.fromARGB(255, 255, 159, 10),
     highContrastColor: Color.fromARGB(255, 201, 52, 0),
@@ -152,6 +157,7 @@ class CupertinoColors {
   /// * [UIColor.systemPink](https://developer.apple.com/documentation/uikit/uicolor/3173148-systempink),
   ///   the `UIKit` equivalent.
   static const CupertinoDynamicColor systemPink = CupertinoDynamicColor.withBrightnessAndContrast(
+    debugLabel: 'systemPink',
     color: Color.fromARGB(255, 255, 45, 85),
     darkColor: Color.fromARGB(255, 255, 55, 95),
     highContrastColor: Color.fromARGB(255, 211, 15, 69),
@@ -165,6 +171,7 @@ class CupertinoColors {
   /// * [UIColor.systemPurple](https://developer.apple.com/documentation/uikit/uicolor/3173149-systempurple),
   ///   the `UIKit` equivalent.
   static const CupertinoDynamicColor systemPurple = CupertinoDynamicColor.withBrightnessAndContrast(
+    debugLabel: 'systemPurple',
     color: Color.fromARGB(255, 175, 82, 222),
     darkColor: Color.fromARGB(255, 191, 90, 242),
     highContrastColor: Color.fromARGB(255, 137, 68, 171),
@@ -178,6 +185,7 @@ class CupertinoColors {
   /// * [UIColor.systemRed](https://developer.apple.com/documentation/uikit/uicolor/3173150-systemred),
   ///   the `UIKit` equivalent.
   static const CupertinoDynamicColor systemRed = CupertinoDynamicColor.withBrightnessAndContrast(
+    debugLabel: 'systemRed',
     color: Color.fromARGB(255, 255, 59, 48),
     darkColor: Color.fromARGB(255, 255, 69, 58),
     highContrastColor: Color.fromARGB(255, 215, 0, 21),
@@ -191,6 +199,7 @@ class CupertinoColors {
   /// * [UIColor.systemTeal](https://developer.apple.com/documentation/uikit/uicolor/3173151-systemteal),
   ///   the `UIKit` equivalent.
   static const CupertinoDynamicColor systemTeal = CupertinoDynamicColor.withBrightnessAndContrast(
+    debugLabel: 'systemTeal',
     color: Color.fromARGB(255, 90, 200, 250),
     darkColor: Color.fromARGB(255, 100, 210, 255),
     highContrastColor: Color.fromARGB(255, 0, 113, 164),
@@ -204,6 +213,7 @@ class CupertinoColors {
   /// * [UIColor.systemYellow](https://developer.apple.com/documentation/uikit/uicolor/3173152-systemyellow),
   ///   the `UIKit` equivalent.
   static const CupertinoDynamicColor systemYellow = CupertinoDynamicColor.withBrightnessAndContrast(
+    debugLabel: 'systemYellow',
     color: Color.fromARGB(255, 255, 204, 0),
     darkColor: Color.fromARGB(255, 255, 214, 10),
     highContrastColor: Color.fromARGB(255, 160, 90, 0),
@@ -217,6 +227,7 @@ class CupertinoColors {
   /// * [UIColor.systemGray](https://developer.apple.com/documentation/uikit/uicolor/3173143-systemgray),
   ///   the `UIKit` equivalent.
   static const CupertinoDynamicColor systemGrey = CupertinoDynamicColor.withBrightnessAndContrast(
+    debugLabel: 'systemGrey',
     color: Color.fromARGB(255, 142, 142, 147),
     darkColor: Color.fromARGB(255, 142, 142, 147),
     highContrastColor: Color.fromARGB(255, 108, 108, 112),
@@ -230,6 +241,7 @@ class CupertinoColors {
   /// * [UIColor.systemGray2](https://developer.apple.com/documentation/uikit/uicolor/3255071-systemgray2),
   ///   the `UIKit` equivalent.
   static const CupertinoDynamicColor systemGrey2 = CupertinoDynamicColor.withBrightnessAndContrast(
+    debugLabel: 'systemGrey2',
     color: Color.fromARGB(255, 174, 174, 178),
     darkColor: Color.fromARGB(255, 99, 99, 102),
     highContrastColor: Color.fromARGB(255, 142, 142, 147),
@@ -243,6 +255,7 @@ class CupertinoColors {
   /// * [UIColor.systemGray3](https://developer.apple.com/documentation/uikit/uicolor/3255072-systemgray3),
   ///   the `UIKit` equivalent.
   static const CupertinoDynamicColor systemGrey3 = CupertinoDynamicColor.withBrightnessAndContrast(
+    debugLabel: 'systemGrey3',
     color: Color.fromARGB(255, 199, 199, 204),
     darkColor: Color.fromARGB(255, 72, 72, 74),
     highContrastColor: Color.fromARGB(255, 174, 174, 178),
@@ -256,6 +269,7 @@ class CupertinoColors {
   /// * [UIColor.systemGray4](https://developer.apple.com/documentation/uikit/uicolor/3255073-systemgray4),
   ///   the `UIKit` equivalent.
   static const CupertinoDynamicColor systemGrey4 = CupertinoDynamicColor.withBrightnessAndContrast(
+    debugLabel: 'systemGrey4',
     color: Color.fromARGB(255, 209, 209, 214),
     darkColor: Color.fromARGB(255, 58, 58, 60),
     highContrastColor: Color.fromARGB(255, 188, 188, 192),
@@ -269,6 +283,7 @@ class CupertinoColors {
   /// * [UIColor.systemGray5](https://developer.apple.com/documentation/uikit/uicolor/3255074-systemgray5),
   ///   the `UIKit` equivalent.
   static const CupertinoDynamicColor systemGrey5 = CupertinoDynamicColor.withBrightnessAndContrast(
+    debugLabel: 'systemGrey5',
     color: Color.fromARGB(255, 229, 229, 234),
     darkColor: Color.fromARGB(255, 44, 44, 46),
     highContrastColor: Color.fromARGB(255, 216, 216, 220),
@@ -282,6 +297,7 @@ class CupertinoColors {
   /// * [UIColor.systemGray6](https://developer.apple.com/documentation/uikit/uicolor/3255075-systemgray6),
   ///   the `UIKit` equivalent.
   static const CupertinoDynamicColor systemGrey6 = CupertinoDynamicColor.withBrightnessAndContrast(
+    debugLabel: 'systemGrey6',
     color: Color.fromARGB(255, 242, 242, 247),
     darkColor: Color.fromARGB(255, 28, 28, 30),
     highContrastColor: Color.fromARGB(255, 235, 235, 240),
@@ -291,6 +307,7 @@ class CupertinoColors {
   /// The color for text labels containing primary content, equivalent to
   /// [UIColor.label](https://developer.apple.com/documentation/uikit/uicolor/3173131-label).
   static const CupertinoDynamicColor label = CupertinoDynamicColor(
+    debugLabel: 'label',
     color: Color.fromARGB(255, 0, 0, 0),
     darkColor: Color.fromARGB(255, 255, 255, 255),
     highContrastColor: Color.fromARGB(255, 0, 0, 0),
@@ -304,6 +321,7 @@ class CupertinoColors {
   /// The color for text labels containing secondary content, equivalent to
   /// [UIColor.secondaryLabel](https://developer.apple.com/documentation/uikit/uicolor/3173136-secondarylabel).
   static const CupertinoDynamicColor secondaryLabel = CupertinoDynamicColor(
+    debugLabel: 'secondaryLabel',
     color: Color.fromARGB(153, 60, 60, 67),
     darkColor: Color.fromARGB(153, 235, 235, 245),
     highContrastColor: Color.fromARGB(173, 60, 60, 67),
@@ -317,6 +335,7 @@ class CupertinoColors {
   /// The color for text labels containing tertiary content, equivalent to
   /// [UIColor.tertiaryLabel](https://developer.apple.com/documentation/uikit/uicolor/3173153-tertiarylabel).
   static const CupertinoDynamicColor tertiaryLabel = CupertinoDynamicColor(
+    debugLabel: 'tertiaryLabel',
     color: Color.fromARGB(76, 60, 60, 67),
     darkColor: Color.fromARGB(76, 235, 235, 245),
     highContrastColor: Color.fromARGB(96, 60, 60, 67),
@@ -330,6 +349,7 @@ class CupertinoColors {
   /// The color for text labels containing quaternary content, equivalent to
   /// [UIColor.quaternaryLabel](https://developer.apple.com/documentation/uikit/uicolor/3173135-quaternarylabel).
   static const CupertinoDynamicColor quaternaryLabel = CupertinoDynamicColor(
+    debugLabel: 'quaternaryLabel',
     color: Color.fromARGB(45, 60, 60, 67),
     darkColor: Color.fromARGB(40, 235, 235, 245),
     highContrastColor: Color.fromARGB(66, 60, 60, 67),
@@ -343,6 +363,7 @@ class CupertinoColors {
   /// An overlay fill color for thin and small shapes, equivalent to
   /// [UIColor.systemFill](https://developer.apple.com/documentation/uikit/uicolor/3255070-systemfill).
   static const CupertinoDynamicColor systemFill = CupertinoDynamicColor(
+    debugLabel: 'systemFill',
     color: Color.fromARGB(51, 120, 120, 128),
     darkColor: Color.fromARGB(91, 120, 120, 128),
     highContrastColor: Color.fromARGB(71, 120, 120, 128),
@@ -356,6 +377,7 @@ class CupertinoColors {
   /// An overlay fill color for medium-size shapes, equivalent to
   /// [UIColor.secondarySystemFill](https://developer.apple.com/documentation/uikit/uicolor/3255069-secondarysystemfill).
   static const CupertinoDynamicColor secondarySystemFill = CupertinoDynamicColor(
+    debugLabel: 'secondarySystemFill',
     color: Color.fromARGB(40, 120, 120, 128),
     darkColor: Color.fromARGB(81, 120, 120, 128),
     highContrastColor: Color.fromARGB(61, 120, 120, 128),
@@ -369,6 +391,7 @@ class CupertinoColors {
   /// An overlay fill color for large shapes, equivalent to
   /// [UIColor.tertiarySystemFill](https://developer.apple.com/documentation/uikit/uicolor/3255076-tertiarysystemfill).
   static const CupertinoDynamicColor tertiarySystemFill = CupertinoDynamicColor(
+    debugLabel: 'tertiarySystemFill',
     color: Color.fromARGB(30, 118, 118, 128),
     darkColor: Color.fromARGB(61, 118, 118, 128),
     highContrastColor: Color.fromARGB(51, 118, 118, 128),
@@ -382,6 +405,7 @@ class CupertinoColors {
   /// An overlay fill color for large areas containing complex content, equivalent
   /// to [UIColor.quaternarySystemFill](https://developer.apple.com/documentation/uikit/uicolor/3255068-quaternarysystemfill).
   static const CupertinoDynamicColor quaternarySystemFill = CupertinoDynamicColor(
+    debugLabel: 'quaternarySystemFill',
     color: Color.fromARGB(20, 116, 116, 128),
     darkColor: Color.fromARGB(45, 118, 118, 128),
     highContrastColor: Color.fromARGB(40, 116, 116, 128),
@@ -395,6 +419,7 @@ class CupertinoColors {
   /// The color for placeholder text in controls or text views, equivalent to
   /// [UIColor.placeholderText](https://developer.apple.com/documentation/uikit/uicolor/3173134-placeholdertext).
   static const CupertinoDynamicColor placeholderText = CupertinoDynamicColor(
+    debugLabel: 'placeholderText',
     color: Color.fromARGB(76, 60, 60, 67),
     darkColor: Color.fromARGB(76, 235, 235, 245),
     highContrastColor: Color.fromARGB(96, 60, 60, 67),
@@ -410,6 +435,7 @@ class CupertinoColors {
   ///
   /// Typically used for designs that have a white primary background in a light environment.
   static const CupertinoDynamicColor systemBackground = CupertinoDynamicColor(
+    debugLabel: 'systemBackground',
     color: Color.fromARGB(255, 255, 255, 255),
     darkColor: Color.fromARGB(255, 0, 0, 0),
     highContrastColor: Color.fromARGB(255, 255, 255, 255),
@@ -425,6 +451,7 @@ class CupertinoColors {
   ///
   /// Typically used for designs that have a white primary background in a light environment.
   static const CupertinoDynamicColor secondarySystemBackground = CupertinoDynamicColor(
+    debugLabel: 'secondarySystemBackground',
     color: Color.fromARGB(255, 242, 242, 247),
     darkColor: Color.fromARGB(255, 28, 28, 30),
     highContrastColor: Color.fromARGB(255, 235, 235, 240),
@@ -440,6 +467,7 @@ class CupertinoColors {
   ///
   /// Typically used for designs that have a white primary background in a light environment.
   static const CupertinoDynamicColor tertiarySystemBackground = CupertinoDynamicColor(
+    debugLabel: 'tertiarySystemBackground',
     color: Color.fromARGB(255, 255, 255, 255),
     darkColor: Color.fromARGB(255, 44, 44, 46),
     highContrastColor: Color.fromARGB(255, 255, 255, 255),
@@ -455,6 +483,7 @@ class CupertinoColors {
   ///
   /// Typically used for grouped content, including table views and platter-based designs.
   static const CupertinoDynamicColor systemGroupedBackground = CupertinoDynamicColor(
+    debugLabel: 'systemGroupedBackground',
     color: Color.fromARGB(255, 242, 242, 247),
     darkColor: Color.fromARGB(255, 0, 0, 0),
     highContrastColor: Color.fromARGB(255, 235, 235, 240),
@@ -470,6 +499,7 @@ class CupertinoColors {
   ///
   /// Typically used for grouped content, including table views and platter-based designs.
   static const CupertinoDynamicColor secondarySystemGroupedBackground = CupertinoDynamicColor(
+    debugLabel: 'secondarySystemGroupedBackground',
     color: Color.fromARGB(255, 255, 255, 255),
     darkColor: Color.fromARGB(255, 28, 28, 30),
     highContrastColor: Color.fromARGB(255, 255, 255, 255),
@@ -485,6 +515,7 @@ class CupertinoColors {
   ///
   /// Typically used for grouped content, including table views and platter-based designs.
   static const CupertinoDynamicColor tertiarySystemGroupedBackground = CupertinoDynamicColor(
+    debugLabel: 'tertiarySystemGroupedBackground',
     color: Color.fromARGB(255, 242, 242, 247),
     darkColor: Color.fromARGB(255, 44, 44, 46),
     highContrastColor: Color.fromARGB(255, 235, 235, 240),
@@ -498,6 +529,7 @@ class CupertinoColors {
   /// The color for thin borders or divider lines that allows some underlying content to be visible,
   /// equivalent to [UIColor.separator](https://developer.apple.com/documentation/uikit/uicolor/3173139-separator).
   static const CupertinoDynamicColor separator = CupertinoDynamicColor(
+    debugLabel: 'separator',
     color: Color.fromARGB(73, 60, 60, 67),
     darkColor: Color.fromARGB(153, 84, 84, 88),
     highContrastColor: Color.fromARGB(94, 60, 60, 67),
@@ -511,6 +543,7 @@ class CupertinoColors {
   /// The color for borders or divider lines that hide any underlying content,
   /// equivalent to [UIColor.opaqueSeparator](https://developer.apple.com/documentation/uikit/uicolor/3173133-opaqueseparator).
   static const CupertinoDynamicColor opaqueSeparator = CupertinoDynamicColor(
+    debugLabel: 'opaqueSeparator',
     color: Color.fromARGB(255, 198, 198, 200),
     darkColor: Color.fromARGB(255, 56, 56, 58),
     highContrastColor: Color.fromARGB(255, 198, 198, 200),
@@ -524,6 +557,7 @@ class CupertinoColors {
   /// The color for links, equivalent to
   /// [UIColor.link](https://developer.apple.com/documentation/uikit/uicolor/3173132-link).
   static const CupertinoDynamicColor link = CupertinoDynamicColor(
+    debugLabel: 'link',
     color: Color.fromARGB(255, 0, 122, 255),
     darkColor: Color.fromARGB(255, 9, 132, 255),
     highContrastColor: Color.fromARGB(255, 0, 122, 255),
@@ -547,7 +581,7 @@ class CupertinoColors {
 /// Sometimes manually resolving a [CupertinoDynamicColor] is not necessary, because
 /// the Cupertino Library provides built-in support for it.
 ///
-/// ### Using a [CupertinoDynamicColor] in a Cupertino widget
+/// ### Using [CupertinoDynamicColor] in a Cupertino widget
 ///
 /// When a Cupertino widget is provided with a [CupertinoDynamicColor], either
 /// directly in its constructor, or from an [InheritedWidget] it depends on (for example,
@@ -638,12 +672,13 @@ class CupertinoColors {
 /// * [CupertinoTheme.of], a static method that retrieves the ambient [CupertinoThemeData],
 ///   and then resolves [CupertinoDynamicColor]s used in the retrieved data.
 @immutable
-class CupertinoDynamicColor extends Color {
+class CupertinoDynamicColor extends Color with DiagnosticableMixin implements Diagnosticable {
   /// Creates an adaptive [Color] that changes its effective color based on the
   /// [BuildContext] given. The default effective color is [color].
   ///
   /// All the colors must not be null.
   const CupertinoDynamicColor({
+    String debugLabel,
     @required Color color,
     @required Color darkColor,
     @required Color highContrastColor,
@@ -662,6 +697,8 @@ class CupertinoDynamicColor extends Color {
          darkElevatedColor,
          highContrastElevatedColor,
          darkHighContrastElevatedColor,
+         null,
+         debugLabel,
        );
 
   /// Creates an adaptive [Color] that changes its effective color based on the
@@ -671,11 +708,13 @@ class CupertinoDynamicColor extends Color {
   ///
   /// All the colors must not be null.
   const CupertinoDynamicColor.withBrightnessAndContrast({
+    String debugLabel,
     @required Color color,
     @required Color darkColor,
     @required Color highContrastColor,
     @required Color darkHighContrastColor,
   }) : this(
+    debugLabel: debugLabel,
     color: color,
     darkColor: darkColor,
     highContrastColor: highContrastColor,
@@ -692,9 +731,11 @@ class CupertinoDynamicColor extends Color {
   ///
   /// All the colors must not be null.
   const CupertinoDynamicColor.withBrightness({
+    String debugLabel,
     @required Color color,
     @required Color darkColor,
   }) : this(
+    debugLabel: debugLabel,
     color: color,
     darkColor: darkColor,
     highContrastColor: color,
@@ -715,6 +756,8 @@ class CupertinoDynamicColor extends Color {
     this.darkElevatedColor,
     this.highContrastElevatedColor,
     this.darkHighContrastElevatedColor,
+    this._debugResolveContext,
+    this._debugLabel,
   ) : assert(color != null),
       assert(darkColor != null),
       assert(highContrastColor != null),
@@ -729,11 +772,19 @@ class CupertinoDynamicColor extends Color {
       // The field `value` is overriden in the class implementation.
       super(0);
 
+  /// The current effective color.
+  ///
+  /// Must not be null. Defaults to [color] if this [CupertinoDynamicColor] has
+  /// never been resolved.
   final Color _effectiveColor;
 
   @override
   int get value => _effectiveColor.value;
 
+  final String _debugLabel;
+
+  final Element _debugResolveContext;
+
   /// The color to use when the [BuildContext] implies a combination of light mode,
   /// normal contrast, and base interface elevation.
   ///
@@ -925,7 +976,11 @@ class CupertinoDynamicColor extends Color {
         }
     }
 
-    assert(resolved != null);
+    Element _debugContext;
+    assert(() {
+      _debugContext = context;
+      return true;
+    }());
     return CupertinoDynamicColor._(
       resolved,
       color,
@@ -936,6 +991,8 @@ class CupertinoDynamicColor extends Color {
       darkElevatedColor,
       highContrastElevatedColor,
       darkHighContrastElevatedColor,
+      _debugContext,
+      _debugLabel,
     );
   }
 
@@ -972,9 +1029,9 @@ class CupertinoDynamicColor extends Color {
   }
 
   @override
-  String toString() {
+  String toString({ DiagnosticLevel minLevel = DiagnosticLevel.debug }) {
     String toString(String name, Color color) {
-      final String marker = color.value == value ? '*' : '';
+      final String marker = color == _effectiveColor ? '*' : '';
       return '$marker$name = $color$marker';
     }
 
@@ -988,6 +1045,64 @@ class CupertinoDynamicColor extends Color {
       if (_isPlatformBrightnessDependent && _isHighContrastDependent && _isInterfaceElevationDependent) toString('darkHighContrastElevatedColor', darkHighContrastElevatedColor),
     ];
 
-    return '$runtimeType(${xs.join(', ')})';
+    return '${_debugLabel ?? runtimeType.toString()}(${xs.join(', ')}, resolved by: ${_debugResolveContext?.widget ?? "UNRESOLVED"})';
+  }
+
+  @override
+  void debugFillProperties(DiagnosticPropertiesBuilder properties) {
+    super.debugFillProperties(properties);
+    if (_debugLabel != null)
+      properties.add(MessageProperty('debugLabel', _debugLabel));
+    properties.add(createCupertinoColorProperty('color', color));
+    if (_isPlatformBrightnessDependent)
+      properties.add(createCupertinoColorProperty('darkColor', darkColor));
+    if (_isHighContrastDependent)
+      properties.add(createCupertinoColorProperty('highContrastColor', highContrastColor));
+    if (_isPlatformBrightnessDependent && _isHighContrastDependent)
+      properties.add(createCupertinoColorProperty('darkHighContrastColor', darkHighContrastColor));
+    if (_isInterfaceElevationDependent)
+      properties.add(createCupertinoColorProperty('elevatedColor', elevatedColor));
+    if (_isPlatformBrightnessDependent && _isInterfaceElevationDependent)
+      properties.add(createCupertinoColorProperty('darkElevatedColor', darkElevatedColor));
+    if (_isHighContrastDependent && _isInterfaceElevationDependent)
+      properties.add(createCupertinoColorProperty('highContrastElevatedColor', highContrastElevatedColor));
+    if (_isPlatformBrightnessDependent && _isHighContrastDependent && _isInterfaceElevationDependent)
+      properties.add(createCupertinoColorProperty('darkHighContrastElevatedColor', darkHighContrastElevatedColor));
+
+    if (_debugResolveContext != null)
+      properties.add(DiagnosticsProperty<Element>('last resolved', _debugResolveContext));
+  }
+}
+
+/// Creates a diagnostics property for [CupertinoDynamicColor].
+///
+/// The [showName], [style], and [level] arguments must not be null.
+DiagnosticsProperty<Color> createCupertinoColorProperty(
+  String name,
+  Color value, {
+    bool showName = true,
+    Object defaultValue = kNoDefaultValue,
+    DiagnosticsTreeStyle style = DiagnosticsTreeStyle.shallow,
+    DiagnosticLevel level = DiagnosticLevel.info,
+}) {
+  if (value is CupertinoDynamicColor) {
+    return DiagnosticsProperty<CupertinoDynamicColor>(
+      name,
+      value,
+      description: value._debugLabel,
+      showName: showName,
+      defaultValue: defaultValue,
+      style: style,
+      level: level,
+    );
+  } else {
+    return ColorProperty(
+      name,
+      value,
+      showName: showName,
+      defaultValue: defaultValue,
+      style: style,
+      level: level,
+    );
   }
 }

packages/flutter/lib/src/cupertino/icon_theme_data.dart

@@ -2,12 +2,13 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
+import 'package:flutter/foundation.dart';
 import 'package:flutter/widgets.dart';
 import 'colors.dart';
 
 /// An [IconThemeData] subclass that automatically resolves its [color] when retrieved
 /// using [IconTheme.of].
-class CupertinoIconThemeData extends IconThemeData {
+class CupertinoIconThemeData extends IconThemeData with DiagnosticableMixin {
   /// Creates a [CupertinoIconThemeData].
   ///
   /// The opacity applies to both explicit and default icon colors. The value
@@ -24,4 +25,21 @@ class CupertinoIconThemeData extends IconThemeData {
     final Color resolvedColor = CupertinoDynamicColor.resolve(color, context);
     return resolvedColor == color ? this : copyWith(color: resolvedColor);
   }
+
+  /// Creates a copy of this icon theme but with the given fields replaced with
+  /// the new values.
+  @override
+  CupertinoIconThemeData copyWith({ Color color, double opacity, double size }) {
+    return CupertinoIconThemeData(
+      color: color ?? this.color,
+      opacity: opacity ?? this.opacity,
+      size: size ?? this.size,
+    );
+  }
+
+  @override
+  void debugFillProperties(DiagnosticPropertiesBuilder properties) {
+    super.debugFillProperties(properties);
+    properties.add(createCupertinoColorProperty('color', color, defaultValue: null));
+  }
 }

packages/flutter/lib/src/cupertino/interface_level.dart

@@ -2,6 +2,8 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
+import 'package:flutter/foundation.dart';
+
 import '../widgets/framework.dart';
 
 /// Indicates the visual level for a piece of content. Equivalent to `UIUserInterfaceLevel`
@@ -73,4 +75,10 @@ class CupertinoUserInterfaceLevel extends InheritedWidget {
       '  $context'
     );
   }
+
+  @override
+  void debugFillProperties(DiagnosticPropertiesBuilder properties) {
+    super.debugFillProperties(properties);
+    properties.add(EnumProperty<CupertinoUserInterfaceLevelData>('user interface level', _data));
+  }
 }

packages/flutter/lib/src/cupertino/text_field.dart

@@ -573,7 +573,7 @@ class CupertinoTextField extends StatefulWidget {
     properties.add(DiagnosticsProperty<bool>('expands', expands, defaultValue: false));
     properties.add(IntProperty('maxLength', maxLength, defaultValue: null));
     properties.add(FlagProperty('maxLengthEnforced', value: maxLengthEnforced, ifTrue: 'max length enforced'));
-    properties.add(ColorProperty('cursorColor', cursorColor, defaultValue: null));
+    properties.add(createCupertinoColorProperty('cursorColor', cursorColor, defaultValue: null));
     properties.add(FlagProperty('selectionEnabled', value: selectionEnabled, defaultValue: true, ifFalse: 'selection disabled'));
     properties.add(DiagnosticsProperty<ScrollController>('scrollController', scrollController, defaultValue: null));
     properties.add(DiagnosticsProperty<ScrollPhysics>('scrollPhysics', scrollPhysics, defaultValue: null));

packages/flutter/lib/src/cupertino/text_theme.dart

@@ -8,9 +8,9 @@ import 'package:flutter/widgets.dart';
 
 import 'colors.dart';
 
-// Please update _DefaultCupertinoTextThemeData and _DefaultCupertinoTextThemeData
-// accordingly after changing the default color here, as their implementation
-// depends on the default value of the color field.
+// Please update _TextThemeDefaultsBuilder accordingly after changing the default
+// color here, as their implementation depends on the default value of the color
+// field.
 //
 // Values derived from https://developer.apple.com/design/resources/.
 const TextStyle _kDefaultTextStyle = TextStyle(
@@ -22,9 +22,9 @@ const TextStyle _kDefaultTextStyle = TextStyle(
   decoration: TextDecoration.none,
 );
 
-// Please update _DefaultCupertinoTextThemeData and _DefaultCupertinoTextThemeData
-// accordingly after changing the default color here, as their implementation
-// depends on the default value of the color field.
+// Please update _TextThemeDefaultsBuilder accordingly after changing the default
+// color here, as their implementation depends on the default value of the color
+// field.
 //
 // Values derived from https://developer.apple.com/design/resources/.
 const TextStyle _kDefaultActionTextStyle = TextStyle(
@@ -36,9 +36,9 @@ const TextStyle _kDefaultActionTextStyle = TextStyle(
   decoration: TextDecoration.none,
 );
 
-// Please update _DefaultCupertinoTextThemeData and _DefaultCupertinoTextThemeData
-// accordingly after changing the default color here, as their implementation
-// depends on the default value of the color field.
+// Please update _TextThemeDefaultsBuilder accordingly after changing the default
+// color here, as their implementation depends on the default value of the color
+// field.
 //
 // Values derived from https://developer.apple.com/design/resources/.
 const TextStyle _kDefaultTabLabelTextStyle = TextStyle(
@@ -49,9 +49,6 @@ const TextStyle _kDefaultTabLabelTextStyle = TextStyle(
   color: CupertinoColors.inactiveGray,
 );
 
-// Please update _DefaultCupertinoTextThemeData and _DefaultCupertinoTextThemeData
-// accordingly after changing the default color here, as their implementation
-// depends on the default value of the color field.
 const TextStyle _kDefaultMiddleTitleTextStyle = TextStyle(
   inherit: false,
   fontFamily: '.SF Pro Text',
@@ -61,9 +58,6 @@ const TextStyle _kDefaultMiddleTitleTextStyle = TextStyle(
   color: CupertinoColors.label,
 );
 
-// Please update _DefaultCupertinoTextThemeData and _DefaultCupertinoTextThemeData
-// accordingly after changing the default color here, as their implementation
-// depends on the default value of the color field.
 const TextStyle _kDefaultLargeTitleTextStyle = TextStyle(
   inherit: false,
   fontFamily: '.SF Pro Display',
@@ -73,9 +67,9 @@ const TextStyle _kDefaultLargeTitleTextStyle = TextStyle(
   color: CupertinoColors.label,
 );
 
-// Please update _DefaultCupertinoTextThemeData and _DefaultCupertinoTextThemeData
-// accordingly after changing the default color here, as their implementation
-// depends on the default value of the color field.
+// Please update _TextThemeDefaultsBuilder accordingly after changing the default
+// color here, as their implementation depends on the default value of the color
+// field.
 //
 // Inspected on iOS 13 simulator with "Debug View Hierarchy".
 // Value extracted from off-center labels. Centered labels have a font size of 25pt.
@@ -88,9 +82,9 @@ const TextStyle _kDefaultPickerTextStyle = TextStyle(
   color: CupertinoColors.label,
 );
 
-// Please update _DefaultCupertinoTextThemeData and _DefaultCupertinoTextThemeData
-// accordingly after changing the default color here, as their implementation
-// depends on the default value of the color field.
+// Please update _TextThemeDefaultsBuilder accordingly after changing the default
+// color here, as their implementation depends on the default value of the color
+// field.
 //
 // Inspected on iOS 13 simulator with "Debug View Hierarchy".
 // Value extracted from off-center labels. Centered labels have a font size of 25pt.
@@ -135,7 +129,7 @@ class CupertinoTextThemeData extends Diagnosticable {
     TextStyle pickerTextStyle,
     TextStyle dateTimePickerTextStyle,
   }) : this._raw(
-         const _DefaultCupertinoTextThemeData(),
+         const _TextThemeDefaultsBuilder(CupertinoColors.label, CupertinoColors.inactiveGray),
          primaryColor,
          textStyle,
          actionTextStyle,
@@ -160,7 +154,7 @@ class CupertinoTextThemeData extends Diagnosticable {
     this._dateTimePickerTextStyle,
   ) : assert((_navActionTextStyle != null && _actionTextStyle != null) || _primaryColor != null);
 
-  final _DefaultCupertinoTextThemeData _defaults;
+  final _TextThemeDefaultsBuilder _defaults;
   final Color _primaryColor;
 
   final TextStyle _textStyle;
@@ -248,15 +242,30 @@ class CupertinoTextThemeData extends Diagnosticable {
       dateTimePickerTextStyle ?? _dateTimePickerTextStyle,
     );
   }
+
+  @override
+  void debugFillProperties(DiagnosticPropertiesBuilder properties) {
+    super.debugFillProperties(properties);
+    const CupertinoTextThemeData defaultData = CupertinoTextThemeData();
+    properties.add(DiagnosticsProperty<TextStyle>('textStyle', textStyle, defaultValue: defaultData.textStyle));
+    properties.add(DiagnosticsProperty<TextStyle>('actionTextStyle', actionTextStyle, defaultValue: defaultData.actionTextStyle));
+    properties.add(DiagnosticsProperty<TextStyle>('tabLabelTextStyle', tabLabelTextStyle, defaultValue: defaultData.tabLabelTextStyle));
+    properties.add(DiagnosticsProperty<TextStyle>('navTitleTextStyle', navTitleTextStyle, defaultValue: defaultData.navTitleTextStyle));
+    properties.add(DiagnosticsProperty<TextStyle>('navLargeTitleTextStyle', navLargeTitleTextStyle, defaultValue: defaultData.navLargeTitleTextStyle));
+    properties.add(DiagnosticsProperty<TextStyle>('navActionTextStyle', navActionTextStyle, defaultValue: defaultData.navActionTextStyle));
+    properties.add(DiagnosticsProperty<TextStyle>('pickerTextStyle', pickerTextStyle, defaultValue: defaultData.pickerTextStyle));
+    properties.add(DiagnosticsProperty<TextStyle>('dateTimePickerTextStyle', dateTimePickerTextStyle, defaultValue: defaultData.dateTimePickerTextStyle));
+  }
 }
 
+
 @immutable
-class _DefaultCupertinoTextThemeData extends Diagnosticable {
-  const _DefaultCupertinoTextThemeData({
-    this.labelColor = CupertinoColors.label,
-    this.inactiveGrayColor = CupertinoColors.inactiveGray,
-  }) : assert(labelColor != null),
-       assert(inactiveGrayColor != null);
+class _TextThemeDefaultsBuilder {
+  const _TextThemeDefaultsBuilder(
+    this.labelColor,
+    this.inactiveGrayColor,
+  ) : assert(labelColor != null),
+      assert(inactiveGrayColor != null);
 
   final Color labelColor;
   final Color inactiveGrayColor;
@@ -277,11 +286,11 @@ class _DefaultCupertinoTextThemeData extends Diagnosticable {
   TextStyle actionTextStyle({ Color primaryColor }) => _kDefaultActionTextStyle.copyWith(color: primaryColor);
   TextStyle navActionTextStyle({ Color primaryColor }) => actionTextStyle(primaryColor: primaryColor);
 
-  _DefaultCupertinoTextThemeData resolveFrom(BuildContext context, bool nullOk) {
+  _TextThemeDefaultsBuilder resolveFrom(BuildContext context, bool nullOk) {
     final Color resolvedLabelColor = CupertinoDynamicColor.resolve(labelColor, context, nullOk: nullOk);
     final Color resolvedInactiveGray = CupertinoDynamicColor.resolve(inactiveGrayColor, context, nullOk: nullOk);
     return resolvedLabelColor == labelColor && resolvedInactiveGray == CupertinoColors.inactiveGray
       ? this
-      : _DefaultCupertinoTextThemeData(labelColor: resolvedLabelColor, inactiveGrayColor: resolvedInactiveGray);
+      : _TextThemeDefaultsBuilder(resolvedLabelColor, resolvedInactiveGray);
   }
 }

packages/flutter/lib/src/cupertino/theme.dart

@@ -99,6 +99,12 @@ class CupertinoTheme extends StatelessWidget {
       ),
     );
   }
+
+  @override
+  void debugFillProperties(DiagnosticPropertiesBuilder properties) {
+    super.debugFillProperties(properties);
+    data.debugFillProperties(properties);
+  }
 }
 
 class _InheritedCupertinoTheme extends InheritedWidget {
@@ -284,10 +290,10 @@ class CupertinoThemeData extends Diagnosticable {
       _brightness,
       convertColor(_primaryColor),
       convertColor(_primaryContrastingColor),
-      textTheme?.resolveFrom(context, nullOk: nullOk),
+      _textTheme?.resolveFrom(context, nullOk: nullOk),
       convertColor(_barBackgroundColor),
       convertColor(_scaffoldBackgroundColor),
-      _defaults.resolveFrom(context, nullOk: nullOk),
+      _defaults.resolveFrom(context, _textTheme == null, nullOk: nullOk),
     );
   }
 
@@ -322,11 +328,11 @@ class CupertinoThemeData extends Diagnosticable {
     super.debugFillProperties(properties);
     const CupertinoThemeData defaultData = CupertinoThemeData();
     properties.add(EnumProperty<Brightness>('brightness', brightness, defaultValue: defaultData.brightness));
-    properties.add(ColorProperty('primaryColor', primaryColor, defaultValue: defaultData.primaryColor));
-    properties.add(ColorProperty('primaryContrastingColor', primaryContrastingColor, defaultValue: defaultData.primaryContrastingColor));
-    properties.add(DiagnosticsProperty<CupertinoTextThemeData>('textTheme', textTheme, defaultValue: defaultData.textTheme));
-    properties.add(ColorProperty('barBackgroundColor', barBackgroundColor, defaultValue: defaultData.barBackgroundColor));
-    properties.add(ColorProperty('scaffoldBackgroundColor', scaffoldBackgroundColor, defaultValue: defaultData.scaffoldBackgroundColor));
+    properties.add(createCupertinoColorProperty('primaryColor', primaryColor, defaultValue: defaultData.primaryColor));
+    properties.add(createCupertinoColorProperty('primaryContrastingColor', primaryContrastingColor, defaultValue: defaultData.primaryContrastingColor));
+    properties.add(createCupertinoColorProperty('barBackgroundColor', barBackgroundColor, defaultValue: defaultData.barBackgroundColor));
+    properties.add(createCupertinoColorProperty('scaffoldBackgroundColor', scaffoldBackgroundColor, defaultValue: defaultData.scaffoldBackgroundColor));
+    textTheme.debugFillProperties(properties);
   }
 }
 
@@ -413,7 +419,7 @@ class _CupertinoThemeDefaults {
   final Color scaffoldBackgroundColor;
   final _CupertinoTextThemeDefaults textThemeDefaults;
 
-  _CupertinoThemeDefaults resolveFrom(BuildContext context, { @required bool nullOk }) {
+  _CupertinoThemeDefaults resolveFrom(BuildContext context, bool resolveTextTheme, { @required bool nullOk }) {
     assert(nullOk != null);
     Color convertColor(Color color) => CupertinoDynamicColor.resolve(color, context, nullOk: nullOk);
 
@@ -423,7 +429,7 @@ class _CupertinoThemeDefaults {
       convertColor(primaryContrastingColor),
       convertColor(barBackgroundColor),
       convertColor(scaffoldBackgroundColor),
-      textThemeDefaults?.resolveFrom(context, nullOk: nullOk),
+      resolveTextTheme ? textThemeDefaults?.resolveFrom(context, nullOk: nullOk) : textThemeDefaults,
     );
   }
 }

packages/flutter/lib/src/widgets/icon_theme.dart

@@ -60,7 +60,13 @@ class IconTheme extends InheritedTheme {
   /// ```
   static IconThemeData of(BuildContext context) {
     final IconThemeData iconThemeData = _getInheritedIconThemeData(context).resolve(context);
-    return iconThemeData.isConcrete ? iconThemeData : const IconThemeData.fallback().merge(iconThemeData);
+    return iconThemeData.isConcrete
+      ? iconThemeData
+      : iconThemeData.copyWith(
+        size: iconThemeData.size ?? const IconThemeData.fallback().size,
+        color: iconThemeData.color ?? const IconThemeData.fallback().color,
+        opacity: iconThemeData.opacity ?? const IconThemeData.fallback().opacity,
+      );
   }
 
   static IconThemeData _getInheritedIconThemeData(BuildContext context) {
@@ -80,6 +86,6 @@ class IconTheme extends InheritedTheme {
   @override
   void debugFillProperties(DiagnosticPropertiesBuilder properties) {
     super.debugFillProperties(properties);
-    properties.add(DiagnosticsProperty<IconThemeData>('data', data, showName: false));
+    data.debugFillProperties(properties);
   }
 }

packages/flutter/test/cupertino/colors_test.dart

@@ -132,19 +132,21 @@ void main() {
   test('CupertinoDynamicColor.toString() works', () {
     expect(
       dynamicColor.toString(),
-      'CupertinoDynamicColor(*color = Color(0xff000000)*, '
-      'darkColor = Color(0xff000001), '
-      'highContrastColor = Color(0xff000003), '
-      'darkHighContrastColor = Color(0xff000005), '
-      'elevatedColor = Color(0xff000002), '
-      'darkElevatedColor = Color(0xff000004), '
-      'highContrastElevatedColor = Color(0xff000006), '
-      'darkHighContrastElevatedColor = Color(0xff000007))',
+      contains(
+        'CupertinoDynamicColor(*color = Color(0xff000000)*, '
+        'darkColor = Color(0xff000001), '
+        'highContrastColor = Color(0xff000003), '
+        'darkHighContrastColor = Color(0xff000005), '
+        'elevatedColor = Color(0xff000002), '
+        'darkElevatedColor = Color(0xff000004), '
+        'highContrastElevatedColor = Color(0xff000006), '
+        'darkHighContrastElevatedColor = Color(0xff000007)',
+      ),
     );
-    expect(notSoDynamicColor1.toString(), 'CupertinoDynamicColor(*color = Color(0xff000000)*)');
-    expect(vibrancyDependentColor1.toString(), 'CupertinoDynamicColor(*color = Color(0xff000001)*, darkColor = Color(0xff000000))');
-    expect(contrastDependentColor1.toString(), 'CupertinoDynamicColor(*color = Color(0xff000001)*, highContrastColor = Color(0xff000000))');
-    expect(elevationDependentColor1.toString(), 'CupertinoDynamicColor(*color = Color(0xff000001)*, elevatedColor = Color(0xff000000))');
+    expect(notSoDynamicColor1.toString(), contains('CupertinoDynamicColor(*color = Color(0xff000000)*'));
+    expect(vibrancyDependentColor1.toString(), contains('CupertinoDynamicColor(*color = Color(0xff000001)*, darkColor = Color(0xff000000)'));
+    expect(contrastDependentColor1.toString(), contains('CupertinoDynamicColor(*color = Color(0xff000001)*, highContrastColor = Color(0xff000000)'));
+    expect(elevationDependentColor1.toString(), contains('CupertinoDynamicColor(*color = Color(0xff000001)*, elevatedColor = Color(0xff000000)'));
 
     expect(
       const CupertinoDynamicColor.withBrightnessAndContrast(
@@ -153,10 +155,12 @@ void main() {
         highContrastColor: color2,
         darkHighContrastColor: color3,
       ).toString(),
-      'CupertinoDynamicColor(*color = Color(0xff000000)*, '
-      'darkColor = Color(0xff000001), '
-      'highContrastColor = Color(0xff000002), '
-      'darkHighContrastColor = Color(0xff000003))',
+      contains(
+        'CupertinoDynamicColor(*color = Color(0xff000000)*, '
+        'darkColor = Color(0xff000001), '
+        'highContrastColor = Color(0xff000002), '
+        'darkHighContrastColor = Color(0xff000003)',
+      ),
     );
   });
 

packages/flutter/test/cupertino/date_picker_test.dart

@@ -692,7 +692,7 @@ void main() {
         // 2017 has 28 days in Feb so 29 is greyed out.
         expect(
           tester.widget<Text>(find.text('29')).style.color,
-          isSameColorAs(CupertinoColors.inactiveGray),
+          isSameColorAs(CupertinoColors.inactiveGray.color),
         );
 
         await tester.drag(find.text('2017'), const Offset(0.0, 32.0), touchSlopY: 0.0);
@@ -707,7 +707,7 @@ void main() {
         // 2016 has 29 days in Feb so 29 is not greyed out.
         expect(
           tester.widget<Text>(find.text('29')).style.color,
-          isNot(isSameColorAs(CupertinoColors.inactiveGray)),
+          isNot(isSameColorAs(CupertinoColors.inactiveGray.color)),
         );
 
         await tester.drag(find.text('2016'), const Offset(0.0, -32.0), touchSlopY: 0.0);
@@ -721,7 +721,7 @@ void main() {
 
         expect(
           tester.widget<Text>(find.text('29')).style.color,
-          isSameColorAs(CupertinoColors.inactiveGray),
+          isSameColorAs(CupertinoColors.inactiveGray.color),
         );
     });
 

packages/flutter/test/cupertino/dialog_test.dart

@@ -60,7 +60,7 @@ void main() {
 
     final DefaultTextStyle widget = tester.widget(find.byType(DefaultTextStyle));
 
-    expect(widget.style.color.withAlpha(255).value, CupertinoColors.destructiveRed.value);
+    expect(widget.style.color.withAlpha(255), CupertinoColors.systemRed.color);
   });
 
   testWidgets('Dialog dark theme', (WidgetTester tester) async {
@@ -183,7 +183,7 @@ void main() {
 
     final DefaultTextStyle widget = tester.widget(find.byType(DefaultTextStyle));
 
-    expect(widget.style.color.withAlpha(255).value, CupertinoColors.destructiveRed.value);
+    expect(widget.style.color.withAlpha(255), CupertinoColors.systemRed.color);
     expect(widget.style.fontWeight, equals(FontWeight.w600));
   });
 

packages/flutter/test/cupertino/nav_bar_test.dart

@@ -173,12 +173,12 @@ void main() {
         home: CupertinoNavigationBar(
           leading: CupertinoButton(
             onPressed: () { },
-            child: const _ExpectStyles(color: CupertinoColors.activeBlue, index: 0x000001),
+            child: _ExpectStyles(color: CupertinoColors.systemBlue.color, index: 0x000001),
           ),
           middle: const _ExpectStyles(color: CupertinoColors.black, index: 0x000100),
           trailing: CupertinoButton(
             onPressed: () { },
-            child: const _ExpectStyles(color: CupertinoColors.activeBlue, index: 0x010000),
+            child: _ExpectStyles(color: CupertinoColors.systemBlue.color, index: 0x010000),
           ),
         ),
       ),

packages/flutter/test/cupertino/segmented_control_test.dart

@@ -369,7 +369,7 @@ void main() {
               },
               groupValue: sharedValue,
               unselectedColor: CupertinoColors.lightBackgroundGray,
-              selectedColor: CupertinoColors.activeGreen,
+              selectedColor: CupertinoColors.activeGreen.color,
               borderColor: CupertinoColors.black,
               pressedColor: const Color(0x638CFC7B),
             ),
@@ -383,8 +383,8 @@ void main() {
 
     expect(getRenderSegmentedControl(tester).borderColor, CupertinoColors.black);
     expect(textStyle.style.color, CupertinoColors.lightBackgroundGray);
-    expect(iconTheme.data.color, CupertinoColors.activeGreen);
-    expect(getBackgroundColor(tester, 0), CupertinoColors.activeGreen);
+    expect(iconTheme.data.color, CupertinoColors.activeGreen.color);
+    expect(getBackgroundColor(tester, 0), CupertinoColors.activeGreen.color);
     expect(getBackgroundColor(tester, 1), CupertinoColors.lightBackgroundGray);
 
     await tester.tap(find.widgetWithIcon(IconTheme, const IconData(1)));
@@ -393,17 +393,17 @@ void main() {
     textStyle = tester.widget(find.widgetWithText(DefaultTextStyle, 'Child 1'));
     iconTheme = tester.widget(find.widgetWithIcon(IconTheme, const IconData(1)));
 
-    expect(textStyle.style.color, CupertinoColors.activeGreen);
+    expect(textStyle.style.color, CupertinoColors.activeGreen.color);
     expect(iconTheme.data.color, CupertinoColors.lightBackgroundGray);
     expect(getBackgroundColor(tester, 0), CupertinoColors.lightBackgroundGray);
-    expect(getBackgroundColor(tester, 1), CupertinoColors.activeGreen);
+    expect(getBackgroundColor(tester, 1), CupertinoColors.activeGreen.color);
 
     final Offset center = tester.getCenter(find.text('Child 1'));
     await tester.startGesture(center);
     await tester.pumpAndSettle();
 
     expect(getBackgroundColor(tester, 0), const Color(0x638CFC7B));
-    expect(getBackgroundColor(tester, 1), CupertinoColors.activeGreen);
+    expect(getBackgroundColor(tester, 1), CupertinoColors.activeGreen.color);
   });
 
   testWidgets('Widgets are centered within segments', (WidgetTester tester) async {

packages/flutter/test/cupertino/text_field_test.dart

@@ -3391,7 +3391,7 @@ void main() {
                 children: <Widget>[
                   Container(
                     height: 100,
-                    color: CupertinoColors.activeOrange,
+                    color: CupertinoColors.black,
                   ),
                   Expanded(
                     child: Navigator(

packages/flutter/test/cupertino/theme_test.dart

@@ -4,6 +4,9 @@
 
 import 'dart:async';
 
+import 'package:collection/collection.dart' show SetEquality;
+import 'package:flutter/foundation.dart';
+import 'package:flutter/painting.dart';
 import 'package:flutter/cupertino.dart';
 import 'package:flutter_test/flutter_test.dart';
 
@@ -56,10 +59,10 @@ void main() {
 
   testWidgets('Theme attributes cascade', (WidgetTester tester) async {
     final CupertinoThemeData theme = await testTheme(tester, const CupertinoThemeData(
-      primaryColor: CupertinoColors.destructiveRed,
+      primaryColor: CupertinoColors.systemRed,
     ));
 
-    expect(theme.textTheme.actionTextStyle.color, isSameColorAs(CupertinoColors.destructiveRed));
+    expect(theme.textTheme.actionTextStyle.color, isSameColorAs(CupertinoColors.systemRed.color));
   });
 
   testWidgets('Dependent attribute can be overridden from cascaded value', (WidgetTester tester) async {
@@ -137,12 +140,12 @@ void main() {
   );
 
   testWidgets("Theme has default IconThemeData, which is derived from the theme's primary color", (WidgetTester tester) async {
-    const CupertinoDynamicColor primaryColor = CupertinoColors.destructiveRed;
+    const CupertinoDynamicColor primaryColor = CupertinoColors.systemRed;
     const CupertinoThemeData themeData = CupertinoThemeData(primaryColor: primaryColor);
 
     final IconThemeData resultingIconTheme = await testIconTheme(tester, themeData);
 
-    expect(resultingIconTheme.color, themeData.primaryColor);
+    expect(resultingIconTheme.color, isSameColorAs(primaryColor));
 
     // Works in dark mode if primaryColor is a CupertinoDynamicColor.
     final Color darkColor = (await testIconTheme(
@@ -164,6 +167,36 @@ void main() {
     expect(iconTheme.color, CupertinoColors.activeOrange);
   });
 
+  testWidgets('CupertinoTheme diagnostics', (WidgetTester tester) async {
+    final DiagnosticPropertiesBuilder builder = DiagnosticPropertiesBuilder();
+    const CupertinoThemeData().debugFillProperties(builder);
+
+    final Set<String> description = builder.properties
+      .map((DiagnosticsNode node) => node.name.toString())
+      .toSet();
+
+    expect(
+      const SetEquality<String>().equals(
+        description,
+        <String>{ 'brightness',
+          'primaryColor',
+          'primaryContrastingColor',
+          'barBackgroundColor',
+          'scaffoldBackgroundColor',
+          'textStyle',
+          'actionTextStyle',
+          'tabLabelTextStyle',
+          'navTitleTextStyle',
+          'navLargeTitleTextStyle',
+          'navActionTextStyle',
+          'pickerTextStyle',
+          'dateTimePickerTextStyle'
+        }
+      ),
+      isTrue,
+    );
+  });
+
   Brightness currentBrightness;
   void colorMatches(Color componentColor, CupertinoDynamicColor expectedDynamicColor) {
     switch (currentBrightness) {
@@ -181,7 +214,7 @@ void main() {
       final CupertinoThemeData data = CupertinoThemeData(brightness: currentBrightness, primaryColor: CupertinoColors.systemRed);
       final CupertinoThemeData theme = await testTheme(tester, data);
 
-      expect(data.primaryColor, isSameColorAs(CupertinoColors.systemRed.color));
+      expect(data.primaryColor, isSameColorAs(CupertinoColors.systemRed));
       colorMatches(theme.primaryColor, CupertinoColors.systemRed);
     });
 

packages/flutter_test/lib/src/matchers.dart

@@ -1625,7 +1625,7 @@ class _ColorMatcher extends Matcher {
   @override
   bool matches(dynamic item, Map<dynamic, dynamic> matchState) {
     if (item is Color)
-      return item.value == targetColor.value;
+      return item == targetColor || item.value == targetColor.value;
     return false;
   }