import 'package:color_blindness/color_blindness.dart'; import 'package:color_blindness/color_blindness_color_scheme.dart'; import 'package:flutter/foundation.dart'; import 'package:flutter/material.dart'; const _seedColor = Colors.indigo; final _lightScheme = ColorScheme.fromSeed( seedColor: _seedColor, brightness: Brightness.light, ); final _darkScheme = ColorScheme.fromSeed( seedColor: _seedColor, brightness: Brightness.dark, ); ThemeData buildTheme({ required Brightness brightness, ColorBlindnessType blindnessType = ColorBlindnessType.none, }) { final baseScheme = brightness == Brightness.light ? _lightScheme : _darkScheme; late final ColorScheme scheme; if (!kReleaseMode && blindnessType != ColorBlindnessType.none) { scheme = colorBlindnessColorScheme(baseScheme, blindnessType); } else { scheme = baseScheme; } return ThemeData( colorScheme: scheme, brightness: brightness, useMaterial3: true, ); }