fltkeep-editor_state.dart

@override
Widget build(BuildContext context) {
  final uid = Provider.of<CurrentUser>(context).data.uid;
  return ChangeNotifierProvider.value(
    value: _note,
    child: Consumer<Note>(
      builder: (_, __, ___) => Theme(
        data: Theme.of(context).copyWith(
          primaryColor: _noteColor,
          ...
        ),
        child: AnnotatedRegion<SystemUiOverlayStyle>(
          // tint the Android system navigation bar  
          value: SystemUiOverlayStyle.dark.copyWith(
            statusBarColor: _noteColor,
            systemNavigationBarColor: _noteColor,
            systemNavigationBarIconBrightness: Brightness.dark,
          ),
          child: Scaffold(
            key: _scaffoldKey,
            appBar: AppBar(
              actions: _buildTopActions(context, uid),
            ),
            body: WillPopScope(
              onWillPop: () => _onPop(uid),
              child: _buildBody(context, uid), // textfields for title/content
            ),
            bottomNavigationBar: _buildBottomAppBar(context),
          ),
        ),
      ),
    ),
  );
}