How to change ListTile leading icon color in ThemeData() on FLutter

Question

I have a list tile widget and the color of the leading icon is set to default for both light and dark theme in flutter.

After upgrading flutter to Flutter 2.5.1, the list tile leading icon is weird in dark mode.

I have to change the leading icon color to white in the dark mode and default in the light mode and this has to be changed in the Theme Data manually.

My Theme class

  static ThemeData myTheme(bool isDark) {
    return !isDark
        ? ThemeData.light().copyWith(
            primaryColor: Colors.deepPurple,
            colorScheme: ColorScheme.fromSwatch().copyWith(
              secondary: Colors.deepPurple,
            ),
          )
        : ThemeData.dark().copyWith(
            primaryColor: Colors.deepPurple,
            colorScheme: ColorScheme.fromSwatch().copyWith(
              secondary: Colors.deepPurple,
            ),
          );
  }
}

Answer 1

           return MaterialApp(
              themeMode: ThemeMode.system,
              theme: ThemeData(
                iconTheme: IconThemeData(color: Colors.blue),
              ),
              darkTheme: ThemeData(
                iconTheme: IconThemeData(color: Colors.red),
              ));