Set SystemNavigation Bar Color

Here is explained how to Set System Navigation Bar Color

Set Color

  SystemChrome.setSystemUIOverlayStyle(SystemUiOverlayStyle(
    systemNavigationBarColor: Colors.red,
  ));

Set Divider Color

 SystemChrome.setSystemUIOverlayStyle(SystemUiOverlayStyle(
    systemNavigationBarColor: Colors.red,
    systemNavigationBarDividerColor: Colors.blue,
  ));

Set Brightness

  SystemChrome.setSystemUIOverlayStyle(SystemUiOverlayStyle(
    systemNavigationBarColor: Colors.red,
    systemNavigationBarIconBrightness: Brightness.dark,
  ));