增加首页数据首次记录和还原索引条红色。review by 剑秋。

@@ -97,7 +97,7 @@ let styles = StyleSheet.create({
         height: viewHeight,
 		bottom : 1,
 		right: 1,
-		backgroundColor: 'red',
+        backgroundColor: 'rgba(255,255,255,0.2)',
         alignItems: 'center',
 		justifyContent: 'center',
     },

@@ -531,6 +531,8 @@ export default class Home extends Component {
                         enableEmptySections={true}
                         enablePullToRefresh={true}
                         isOnPullToRefresh={isPullToRefresh}
+                        initialListSize={30}
+                        pageSize={30}
                         refreshControl={
                                 <RefreshControl
                                     refreshing={isPullToRefresh}