ChoiceChip's default "selected" style in dark mode theme is unreadable #49984 (#74610)

packages/flutter/lib/src/material/theme_data.dart

@@ -416,7 +416,7 @@ class ThemeData with Diagnosticable {
     bottomAppBarTheme ??= const BottomAppBarTheme();
     cardTheme ??= const CardTheme();
     chipTheme ??= ChipThemeData.fromDefaults(
-      secondaryColor: primaryColor,
+      secondaryColor: isDark ? Colors.tealAccent[200]! : primaryColor,
       brightness: colorScheme.brightness,
       labelStyle: textTheme.bodyText1!,
     );

packages/flutter/test/material/chip_theme_test.dart

@@ -61,9 +61,23 @@ void main() {
 
     expect(chipTheme.backgroundColor, equals(Colors.black.withAlpha(0x1f)));
     expect(chipTheme.selectedColor, equals(Colors.black.withAlpha(0x3d)));
+    expect(chipTheme.secondarySelectedColor, equals(Colors.red.withAlpha(0x3d)));
     expect(chipTheme.deleteIconColor, equals(Colors.black.withAlpha(0xde)));
   });
 
+  testWidgets('Chip theme is built by ThemeData with dark mode enabled', (WidgetTester tester) async {
+    final ThemeData theme = ThemeData(
+      platform: TargetPlatform.android,
+      brightness: Brightness.dark,
+    );
+    final ChipThemeData chipTheme = theme.chipTheme;
+
+    expect(chipTheme.backgroundColor, equals(Colors.white.withAlpha(0x1f)));
+    expect(chipTheme.selectedColor, equals(Colors.white.withAlpha(0x3d)));
+    expect(chipTheme.secondarySelectedColor, equals(Colors.tealAccent[200]!.withAlpha(0x3d)));
+    expect(chipTheme.deleteIconColor, equals(Colors.white.withAlpha(0xde)));
+  });
+
   testWidgets('Chip uses ThemeData chip theme if present', (WidgetTester tester) async {
     final ThemeData theme = ThemeData(
       platform: TargetPlatform.android,