darkTheme function
Implementation
ThemeData darkTheme() => ThemeData.from(
colorScheme: ColorScheme.fromSeed(
seedColor: Colors.green,
brightness: Brightness.dark,
),
useMaterial3: true,
).followLatestSpec().copyWith(
cupertinoOverrideTheme: const CupertinoThemeData(
// Needed for correct CupertinoTextField color (bug?)
textTheme: CupertinoTextThemeData(),
),
);