How to change the entire theme's text color in Flutter?

Question

There is probably something obvious I\'m missing. Is there one property that can change the color of all the text in a Flutter app?

The way I am doing it now is

Answer 1

mine is working with this:

return MaterialApp(
  theme: ThemeData(
    textTheme: TextTheme(
      bodyText2: TextStyle(
        color: Colors.white,
      ),
    ),
  ),
);