Improve drawer menu items

sky/sdk/example/widgets/card_collection.dart

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 import 'package:sky/base/lerp.dart';
 import 'package:sky/painting/text_style.dart';
 import 'package:sky/theme/colors.dart';
 import 'package:sky/widgets/basic.dart';
 import 'package:sky/widgets/card.dart';
 import 'package:sky/widgets/dismissable.dart';
 import 'package:sky/widgets/scaffold.dart';
 import 'package:sky/widgets/variable_height_scrollable.dart';
 import 'package:sky/widgets/theme.dart';
 import 'package:sky/widgets/tool_bar.dart';
 import 'package:sky/widgets/widget.dart';
 
 
 class CardCollectionApp extends App {
 
   final TextStyle cardLabelStyle =
-    new TextStyle(color: White, fontSize: 18.0, fontWeight: bold);
+    new TextStyle(color: white, fontSize: 18.0, fontWeight: bold);
 
   final List<double> cardHeights = [
     48.0, 64.0, 82.0, 46.0, 60.0, 55.0, 84.0, 96.0, 50.0,
     48.0, 64.0, 82.0, 46.0, 60.0, 55.0, 84.0, 96.0, 50.0,
     48.0, 64.0, 82.0, 46.0, 60.0, 55.0, 84.0, 96.0, 50.0,
     48.0, 64.0, 82.0, 46.0, 60.0, 55.0, 84.0, 96.0, 50.0
   ];
 
   List<int> visibleCardIndices;
 
   void initState() {
     visibleCardIndices = new List.generate(cardHeights.length, (i) => i);
     super.initState();
   }
 
   void dismissCard(int cardIndex) {
     setState(() {
       visibleCardIndices.remove(cardIndex);
     });
   }
 
   Widget _builder(int index) {
     if (index >= visibleCardIndices.length)
       return null;
-    
+
     int cardIndex = visibleCardIndices[index];
     Color color = lerpColor(Red[500], Blue[500], cardIndex / cardHeights.length);
     Widget label = new Text("Item ${cardIndex}", style: cardLabelStyle);
     return new Dismissable(
       key: cardIndex.toString(),
       onDismissed: () { dismissCard(cardIndex); },
       child: new Card(
         color: color,
         child: new Container(
           height: cardHeights[cardIndex],
@@ skipping 17 matching lines @@
     return new Scaffold(
       toolbar: new ToolBar(center: new Text('Swipe Away')),
       body: cardCollection
     );
   }
 }
 
 void main() {
   runApp(new CardCollectionApp());
 }