Fix RenderParagraph to respect text color.

sky/sdk/lib/framework/rendering/paragraph.dart

Index: sky/sdk/lib/framework/rendering/paragraph.dart
diff --git a/sky/sdk/lib/framework/rendering/paragraph.dart b/sky/sdk/lib/framework/rendering/paragraph.dart
index 911ad15ed0b9f92ab62aa2b7de950703264313e8..a92b9fef644c70bd34351a2cc993f0377124f340 100644
--- a/sky/sdk/lib/framework/rendering/paragraph.dart
+++ b/sky/sdk/lib/framework/rendering/paragraph.dart
@@ -58,7 +58,9 @@ class RenderParagraph extends RenderBox {
   }
 
   void paint(RenderObjectDisplayList canvas) {
-    // _layoutRoot.rootElement.style['color'] = 'rgba(' + ...color... + ')';
+    if (_color != null)
+      _layoutRoot.rootElement.style['color'] =
+          'rgba(${_color.red}, ${_color.green}, ${_color.blue}, ${_color.alpha / 255.0 })';
     _layoutRoot.paint(canvas);
   }