Corrected Card resting elevation, tabs example toolbar

examples/widgets/tabs.dart

@@ -125,7 +125,8 @@ class TabbedNavigatorAppState extends State<TabbedNavigatorApp> {
     assert(selectedIndices.length == 5);
 
     ToolBar toolbar = new ToolBar(
-      center: new Text('Tabbed Navigator', style: Typography.white.title)
+      center: new Text('Tabbed Navigator', style: Typography.white.title),
+      elevation: 0
     );
 
     return new Scaffold(

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

@@ -23,7 +23,7 @@ class Card extends StatelessComponent {
       child: new Material(
         color: color,
         type: MaterialType.card,
-        elevation: 8,
+        elevation: 2,
         child: child
       )
     );