Improve drawer menu items

sky/sdk/lib/theme/theme_data.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 'dart:sky';
 
 import 'package:sky/theme/typography.dart' as typography;
 import 'package:sky/theme/colors.dart' as colors;
 
 enum ThemeBrightness { dark, light }
 
 class ThemeData {
 
   ThemeData({
     ThemeBrightness brightness,
     Map<int, Color> primarySwatch,
     Color accentColor,
     this.accentColorBrightness: ThemeBrightness.dark,
     typography.TextTheme text })
     : this.brightness = brightness,
       this.primarySwatch = primarySwatch,
       primaryColorBrightness = primarySwatch == null ? brightness : ThemeBrightness.dark,
       canvasColor = brightness == ThemeBrightness.dark ? colors.Grey[850] : colors.Grey[50],
-      cardColor = brightness == ThemeBrightness.dark ? colors.Grey[800] : colors.White,
+      cardColor = brightness == ThemeBrightness.dark ? colors.Grey[800] : colors.white,
       dividerColor = brightness == ThemeBrightness.dark ? const Color(0x1FFFFFFF) : const Color(0x1F000000),
       // Some users want the pre-multiplied color, others just want the opacity.
       hintColor = brightness == ThemeBrightness.dark ? const Color(0x42FFFFFF) : const Color(0x4C000000),
       hintOpacity = brightness == ThemeBrightness.dark ? 0.26 : 0.30,
+      highlightColor = const Color(0x66999999),
+      selectedColor = const Color(0x33999999),
       text = brightness == ThemeBrightness.dark ? typography.white : typography.black {
     assert(brightness != null);
 
     if (primarySwatch == null) {
       if (brightness == ThemeBrightness.dark) {
         _primaryColor = colors.Grey[900];
       } else {
         _primaryColor = colors.Grey[100];
       }
     } else {
@@ skipping 10 matching lines @@
   factory ThemeData.light() => new ThemeData(primarySwatch: colors.Blue, brightness: ThemeBrightness.light);
   factory ThemeData.dark() => new ThemeData(brightness: ThemeBrightness.dark);
   factory ThemeData.fallback() => new ThemeData.light();
 
   final ThemeBrightness brightness;
   final Map<int, Color> primarySwatch;
   final Color canvasColor;
   final Color cardColor;
   final Color dividerColor;
   final Color hintColor;
+  final Color highlightColor;
+  final Color selectedColor;
   final double hintOpacity;
   final typography.TextTheme text;
 
   Color _primaryColor;
   Color get primaryColor => _primaryColor;
 
   final ThemeBrightness primaryColorBrightness;
 
   Color _accentColor;
   Color get accentColor => _accentColor;
 
   final ThemeBrightness accentColorBrightness;
 }