ThemeData( // (...) hintStyle: TextStyle( color: Colors.grey, // <-- Change this fontSize: null, fontWeight: FontWeight.w400, fontStyle: FontStyle.normal, ), );
TextField( style: TextStyle(color: Colors.red), decoration: InputDecoration(fillColor: Colors.orange, filled: true), )
labelStyle: TextStyle( color: Colors.white, )
TextField( style: TextStyle(color: Colors.white), ... )