Flutter Custom App Theme with ThemeExtension (Example + Template)

This is a simple Flutter custom theme example with ThemeExtension for custom colors and text styles.

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Files navigation

app_theme.dart - simple AppTheme template with ChangeNotifier for changing ThemeMode and ThemeExtension for custom colors.

app_colors_extension.dart - template for custom colors extension (GitHub Gist).

app_text_theme_extension.dart - template on how to define custom text theme extension (GitHub Gist).

app_palette.dart - example on how to define custom color palette with 2 approaches to group colors.

app_typography.dart - example on how to define custom typography.

main.dart - usage example.

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Flutter version: 3.10.1