Change theme data, use extensions on colors instead

[ikbendewilliam]

Use extensions on colors instead and add colors directly on theme.

class ADTheme {
  final bool isDarkTheme;
  final Color text;
  final Color inverseText;
  final Color errorText;
  final Color buttonTextDisabled;
  final Color primary;
...

extension ColorTextTheme on Color {
  TextStyle get titleHuge => TextStyle(fontSize: 40, color: this, fontFamily: ThemeFonts.title, height: 1.2, fontWeight: FontWeight.w900);
  TextStyle get titleBig => TextStyle(fontSize: 30, color: this, fontFamily: ThemeFonts.title, height: 1.2, fontWeight: FontWeight.w900);
  TextStyle get titleNormal => TextStyle(fontSize: 24, color: this, fontFamily: ThemeFonts.title, fontWeight: FontWeight.w900);
  TextStyle get titleSmall => TextStyle(fontSize: 18, color: this, fontFamily: ThemeFonts.title, fontWeight: FontWeight.w900);
  TextStyle get titleListItem => TextStyle(fontSize: 18, color: this, fontFamily: ThemeFonts.title, fontWeight: FontWeight.bold);
  TextStyle get labelButtonBig => TextStyle(fontSize: 16, color: this, fontFamily: ThemeFonts.button, fontWeight: FontWeight.bold);
  TextStyle get labelButtonSmall => TextStyle(fontSize: 14, color: this, fontFamily: ThemeFonts.button, fontWeight: FontWeight.bold);
  TextStyle get bodyBig => TextStyle(fontSize: 18, color: this, fontFamily: ThemeFonts.body);
  TextStyle get bodyNormal => TextStyle(fontSize: 16, color: this, fontFamily: ThemeFonts.body);
  TextStyle get bodySmall => TextStyle(fontSize: 14, color: this, fontFamily: ThemeFonts.body);
  TextStyle get bodyUltraSmall => TextStyle(fontSize: 12, color: this, fontFamily: ThemeFonts.body);
  TextStyle get infoBodySubHeader => TextStyle(fontSize: 14, color: this, fontFamily: ThemeFonts.body, fontWeight: FontWeight.w600);

  Border get border => Border.all(color: this);
}

extension TextStyleExtension on TextStyle {
  TextStyle get bold => copyWith(fontWeight: FontWeight.bold);
}