import 'package:flutter/material.dart'; const COLOR_PRIMARY = Colors.deepOrangeAccent; ThemeData lightTheme = ThemeData( brightness: Brightness.light, primaryColor: COLOR_PRIMARY, fontFamily: "Montserrat"); ThemeData darkTheme = ThemeData( fontFamily: "Montserrat", brightness: Brightness.dark, switchTheme: SwitchThemeData( trackColor: MaterialStateProperty.all(Colors.grey), thumbColor: MaterialStateProperty.all(Colors.white), ), );