revert background color ，review by 阿瑟

@@ -163,7 +163,7 @@ let styles = StyleSheet.create({
         // flex:1,
         // flex:1,
         flexDirection: 'row',
         flexDirection: 'row',
         height: 40,
         height: 40,
-        backgroundColor: 'red',
+        backgroundColor: 'white',
         alignItems: 'center',
         alignItems: 'center',
     },
     },