dark constant

SystemUiOverlayStyle const dark = const SystemUiOverlayStyle(systemNavigationBarColor: const Color(0xFF000000), systemNavigationBarDividerColor: null, statusBarColor: null, systemNavigationBarIconBrightness: Brightness.light, statusBarIconBrightness: Brightness.dark, statusBarBrightness: Brightness.light)

System overlays should be drawn with a dark color. Intended for applications with a light background.

Implementation 

static const SystemUiOverlayStyle dark = SystemUiOverlayStyle(
  systemNavigationBarColor: Color(0xFF000000),
  systemNavigationBarDividerColor: null,
  statusBarColor: null,
  systemNavigationBarIconBrightness: Brightness.light,
  statusBarIconBrightness: Brightness.dark,
  statusBarBrightness: Brightness.light,
)