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(),
      ),
    );