dark property
Implementation
static final ThemeData dark = FlexThemeData.dark(
scheme: FlexScheme.deepBlue,
primary: Colors.blue.shade300, // slightly lighter for dark theme
surface: Color(0xFF1F1F1F), // dark surface
onSurface: gray300, // light gray text on dark background
secondary: Colors.blueGrey.shade700, // secondary accent
surfaceMode: FlexSurfaceMode.highScaffoldLowSurface,
blendLevel: 15,
tabBarStyle: FlexTabBarStyle.forBackground,
useMaterial3: true,
);