Remove Material's opinion about background colours, since in fact the background colour varies dram…

sky/sdk/example/stocks/lib/stock_row.dart

Index: sky/sdk/example/stocks/lib/stock_row.dart
diff --git a/sky/sdk/example/stocks/lib/stock_row.dart b/sky/sdk/example/stocks/lib/stock_row.dart
index c13b66f2c225371e42214a94cd0e8c27511769b9..b909731df64d1c377952324169780f0dd1707f99 100644
--- a/sky/sdk/example/stocks/lib/stock_row.dart
+++ b/sky/sdk/example/stocks/lib/stock_row.dart
@@ -54,8 +54,10 @@ class StockRow extends Component {
         padding: const EdgeDims(16.0, 16.0, 20.0, 16.0),
         height: kHeight,
         decoration: const BoxDecoration(
-            border: const Border(
-                bottom: const BorderSide(color: const Color(0xFFF4F4F4)))),
+          border: const Border(
+            bottom: const BorderSide(color: const Color(0xFFF4F4F4))
+          )
+        ),
         child: new Flex(children)
       )
     );