我可以在主屏幕上将我的Flutter Web应用程序保存为书签图标。当我打开它时，状态栏的颜色是黑色的，看起来很奇怪，看起来不像是一个“应用程序”。
我怎样才能给状态栏给予与我的脚手架相同的颜色？
我现有的代码如下：

...
@override
  Widget build(BuildContext context) {
    return ChangeNotifierProvider<CP>(
      create: (BuildContext content) => CP(),
      child: MaterialApp(
          title: 'App title',
          debugShowCheckedModeBanner: false,
          theme: ThemeData(
            canvasColor: Colors.transparent,
            primarySwatch: white,
            //primaryColor: Colors.white
          ),
          routes: {
            ...
          },
          home: MainBody()),
    );
  }
}

class MainBody extends StatefulWidget {
  @override
  _MainBodyState createState() => _MainBodyState();
}

class _MainBodyState extends State<MainBody> {

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      resizeToAvoidBottomInset: false,
      body: Container(
              decoration: BoxDecoration(
                gradient: LinearGradient(
                  stops: [0.1, 1],
                  end: Alignment.bottomCenter,
                  begin: Alignment.topCenter,
                  colors: [
                    Provider.of<CP>(context).primary,
                    Provider.of<CP>(context).secondary,
                  ],
                ), //Provider.of<CP>(context).fMainPageGradient
              ),
              child: SafeArea(
                child: Column(
                  mainAxisAlignment: MainAxisAlignment.spaceEvenly,
                  crossAxisAlignment: CrossAxisAlignment.stretch,
                  children: <Widget>[
                  ....