reorganize app colors

app/lib/core/design/app_colors.dart

@@ -1,21 +1,85 @@
 import 'package:flutter/material.dart';
 
-class AppColors {
-  AppColors._();
+@immutable
+class AppColors extends ThemeExtension<AppColors> {
+  const AppColors._({
+    this.seedColor = const Color(0xFF167C80),
+    this.privateTabPurple = const Color(0xFF8000D7),
+    this.privateTabBackground = const Color(0xFF25003E),
+    this.privateSelectionOverlay = const Color(0x648000D7),
+    this.torPurple = const Color(0xFF7D4698),
+    this.torActiveGreen = const Color(0xFF68B030),
+    this.torBackgroundGrey = const Color(0xFF333A41),
+  });
 
-  static const Color seedColor = Color(0xFF167C80);
+  final Color seedColor;
+  final Color privateTabPurple;
+  final Color privateTabBackground;
+  final Color privateSelectionOverlay;
+  final Color torPurple;
+  final Color torActiveGreen;
+  final Color torBackgroundGrey;
 
-  static const Color privateTabPurple = Color(0xFF8000D7);
+  static const light = AppColors._();
+  static const dark = AppColors._();
 
-  static const Color privateTabBackground = Color(0xFF25003E);
+  @override
+  AppColors copyWith({
+    Color? seedColor,
+    Color? privateTabPurple,
+    Color? privateTabBackground,
+    Color? privateSelectionOverlay,
+    Color? torPurple,
+    Color? torActiveGreen,
+    Color? torBackgroundGrey,
+  }) {
+    return AppColors._(
+      seedColor: seedColor ?? this.seedColor,
+      privateTabPurple: privateTabPurple ?? this.privateTabPurple,
+      privateTabBackground: privateTabBackground ?? this.privateTabBackground,
+      privateSelectionOverlay:
+          privateSelectionOverlay ?? this.privateSelectionOverlay,
+      torPurple: torPurple ?? this.torPurple,
+      torActiveGreen: torActiveGreen ?? this.torActiveGreen,
+      torBackgroundGrey: torBackgroundGrey ?? this.torBackgroundGrey,
+    );
+  }
 
-  static const Color privateSelectionOverlay = Color(0x648000D7);
+  @override
+  AppColors lerp(covariant ThemeExtension<AppColors>? other, double t) {
+    if (other is! AppColors) {
+      return this;
+    }
 
-  static const Color torPurple = Color(0xFF7D4698);
+    return AppColors._(
+      seedColor: Color.lerp(seedColor, other.seedColor, t)!,
+      privateTabPurple: Color.lerp(
+        privateTabPurple,
+        other.privateTabPurple,
+        t,
+      )!,
+      privateTabBackground: Color.lerp(
+        privateTabBackground,
+        other.privateTabBackground,
+        t,
+      )!,
+      privateSelectionOverlay: Color.lerp(
+        privateSelectionOverlay,
+        other.privateSelectionOverlay,
+        t,
+      )!,
+      torPurple: Color.lerp(torPurple, other.torPurple, t)!,
+      torActiveGreen: Color.lerp(torActiveGreen, other.torActiveGreen, t)!,
+      torBackgroundGrey: Color.lerp(
+        torBackgroundGrey,
+        other.torBackgroundGrey,
+        t,
+      )!,
+    );
+  }
 
-  static const Color torActiveGreen = Color(0xFF68B030);
-
-  static const Color torBackgroundGrey = Color(0xFF333A41);
-
-  static const Color dialogOverlay = Color(0x44000000);
+  /// Get AppColors from the current theme
+  static AppColors of(BuildContext context) {
+    return Theme.of(context).extension<AppColors>() ?? light;
+  }
 }

app/lib/core/providers/defaults.dart

@@ -24,10 +24,10 @@ import 'package:weblibre/core/design/app_colors.dart';
 part 'defaults.g.dart';
 
 @Riverpod(keepAlive: true)
-Color lightSeedColorFallback(Ref ref) => AppColors.seedColor;
+Color lightSeedColorFallback(Ref ref) => AppColors.light.seedColor;
 
 @Riverpod(keepAlive: true)
-Color darkSeedColorFallback(Ref ref) => AppColors.seedColor;
+Color darkSeedColorFallback(Ref ref) => AppColors.dark.seedColor;
 
 @Riverpod(keepAlive: true)
 Uri docsUri(Ref ref) => Uri.parse('https://docs.weblibre.eu/');

app/lib/core/providers/defaults.g.dart

@@ -49,7 +49,7 @@ final class LightSeedColorFallbackProvider
 }
 
 String _$lightSeedColorFallbackHash() =>
-    r'd5fb3ead5795c1cadd6c3a5f91ef84c3cbdaa3c1';
+    r'851efdcb11e4367ea2e54f1884a73fd4cd841d4a';
 
 @ProviderFor(darkSeedColorFallback)
 final darkSeedColorFallbackProvider = DarkSeedColorFallbackProvider._();
@@ -91,7 +91,7 @@ final class DarkSeedColorFallbackProvider
 }
 
 String _$darkSeedColorFallbackHash() =>
-    r'a383dbf6edf4fee54a8215bc52a98f26354e4645';
+    r'161a8c4318108c31d5c300441bc3332d08c24496';
 
 @ProviderFor(docsUri)
 final docsUriProvider = DocsUriProvider._();