Set the default text color to white

sky/sdk/lib/widgets/basic.dart

Index: sky/sdk/lib/widgets/basic.dart
diff --git a/sky/sdk/lib/widgets/basic.dart b/sky/sdk/lib/widgets/basic.dart
index 7c9f8d4533f04dec13f53883eb069bbcb2ea4fb2..f51f9ab60220909a0a14c3f0ba5577b2e042c39e 100644
--- a/sky/sdk/lib/widgets/basic.dart
+++ b/sky/sdk/lib/widgets/basic.dart
@@ -439,8 +439,9 @@ class Text extends Component {
     } else {
       combinedStyle = style;      
     }
-    if (combinedStyle != null)
-      text = new InlineStyle(combinedStyle, [text]);
+    if (combinedStyle == null)
+      combinedStyle = const TextStyle(color: const Color(0xFFFFFFFF));

[abarth-chromium, 2015/06/27 00:31:51]

Maybe we should use a TextStyle from typography.dart?  Perhaps
typography.white.body1 ?

+    text = new InlineStyle(combinedStyle, [text]);
     return new Inline(text: text);

[abarth-chromium, 2015/06/27 00:31:51]

IMHO, we should merge lines 444 and 445 so we don't have to re-assign |text|.

   }
 }