Removed PushedScreen blue background color

playground/src/screens/PushedScreen.js

@@ -20,14 +20,8 @@ class PushedScreen extends Component {
           text: 'single',
           testID: testIDs.TOP_BAR_BUTTON
         },
-        background: {
-          color: 'blue'
-        },
         rightButtonColor: 'red',
       },
-      // layout: {
-      //   backgroundColor: '#f5fcff'
-      // },
       bottomTabs: {
         visible: false
       }