Material and RaisedButton.

sky/sdk/lib/framework/theme2/colors.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' show Color;
 
 const Map<int, Color> Red = const {
    50: const Color(0xFFFFEBEE),
   100: const Color(0xFFFFCDD2),
   200: const Color(0xFFEF9A9A),
@@ skipping 212 matching lines @@
   700: const Color(0xFF5D4037),
   800: const Color(0xFF4E342E),
   900: const Color(0xFF3E2723),
 };
 
 const Map<int, Color> Grey = const {
    50: const Color(0xFFFAFAFA),
   100: const Color(0xFFF5F5F5),
   200: const Color(0xFFEEEEEE),
   300: const Color(0xFFE0E0E0),
+  350: const Color(0xFFD6D6D6), // only for raised button while pressed
   400: const Color(0xFFBDBDBD),
   500: const Color(0xFF9E9E9E),
   600: const Color(0xFF757575),
   700: const Color(0xFF616161),
   800: const Color(0xFF424242),
   900: const Color(0xFF212121),
 };
 
 const Map<int, Color> BlueGrey = const {
    50: const Color(0xFFECEFF1),
   100: const Color(0xFFCFD8DC),
   200: const Color(0xFFB0BEC5),
   300: const Color(0xFF90A4AE),
   400: const Color(0xFF78909C),
   500: const Color(0xFF607D8B),
   600: const Color(0xFF546E7A),
   700: const Color(0xFF455A64),
   800: const Color(0xFF37474F),
   900: const Color(0xFF263238),
 };