feat: Enhance theme customization with color theme persistence and toggle functionality

lib/helpers/theme/theme_customizer.dart

@@ -1,5 +1,5 @@
 import 'dart:convert';
-
+import 'package:flutter/material.dart';
 import 'package:marco/helpers/services/json_decoder.dart';
 import 'package:marco/helpers/services/localizations/language.dart';
 import 'package:marco/helpers/services/localizations/translator.dart';
@@ -7,8 +7,8 @@ import 'package:marco/helpers/services/navigation_services.dart';
 import 'package:marco/helpers/theme/admin_theme.dart';
 import 'package:marco/helpers/theme/app_notifier.dart';
 import 'package:marco/helpers/theme/app_theme.dart';
-import 'package:flutter/material.dart';
 import 'package:provider/provider.dart';
+import 'package:shared_preferences/shared_preferences.dart';
 
 typedef ThemeChangeCallback = void Function(
     ThemeCustomizer oldVal, ThemeCustomizer newVal);
@@ -33,6 +33,8 @@ class ThemeCustomizer {
 
   static Future<void> init() async {
     await initLanguage();
+    await _loadColorTheme();
+     _notify(); 
   }
 
   static initLanguage() async {
@@ -40,7 +42,7 @@ class ThemeCustomizer {
   }
 
   String toJSON() {
-    return jsonEncode({'theme': theme.name});
+    return jsonEncode({'theme': theme.name, 'colorTheme': colorTheme.name});
   }
 
   static ThemeCustomizer fromJSON(String? json) {
@@ -49,6 +51,8 @@ class ThemeCustomizer {
       JSONDecoder decoder = JSONDecoder(json);
       instance.theme =
           decoder.getEnum('theme', ThemeMode.values, ThemeMode.light);
+      instance.colorTheme = decoder.getEnum(
+          'colorTheme', ColorThemeType.values, ColorThemeType.red);
     }
     return instance;
   }
@@ -117,12 +121,46 @@ class ThemeCustomizer {
     tc.topBarTheme = topBarTheme;
     tc.rightBarOpen = rightBarOpen;
     tc.leftBarCondensed = leftBarCondensed;
+    tc.colorTheme = colorTheme;
     tc.currentLanguage = currentLanguage.clone();
     return tc;
   }
 
   @override
   String toString() {
-    return 'ThemeCustomizer{theme: $theme}';
+    return 'ThemeCustomizer{theme: $theme, colorTheme: $colorTheme}';
+  }
+
+  // ---------------------------------------------------------------------------
+  // 🟢 Color Theme Persistence
+  // ---------------------------------------------------------------------------
+
+  static const _colorThemeKey = 'color_theme_type';
+
+  /// Save selected color theme
+  static Future<void> saveColorTheme(ColorThemeType type) async {
+    final prefs = await SharedPreferences.getInstance();
+    await prefs.setString(_colorThemeKey, type.name);
+    instance.colorTheme = type;
+    _notify();
+  }
+
+  /// Load saved color theme (called at startup)
+  static Future<void> _loadColorTheme() async {
+    final prefs = await SharedPreferences.getInstance();
+    final savedType = prefs.getString(_colorThemeKey);
+    if (savedType != null) {
+      instance.colorTheme = ColorThemeType.values.firstWhere(
+        (e) => e.name == savedType,
+        orElse: () => ColorThemeType.red,
+      );
+    }
+  }
+
+  /// Change color theme & persist
+  static Future<void> changeColorTheme(ColorThemeType type) async {
+    oldInstance = instance.clone();
+    instance.colorTheme = type;
+    await saveColorTheme(type);
   }
 }

lib/helpers/theme/theme_editor_widget.dart

@@ -4,6 +4,7 @@ import 'package:marco/helpers/widgets/my_text.dart';
 import 'package:marco/helpers/widgets/wave_background.dart';
 import 'package:marco/helpers/theme/admin_theme.dart';
 import 'package:marco/helpers/theme/theme_customizer.dart';
+import 'package:flutter_lucide/flutter_lucide.dart';
 
 class ThemeOption {
   final String label;
@@ -105,7 +106,20 @@ class _ThemeEditorWidgetState extends State<ThemeEditorWidget> {
             ],
           ),
           const SizedBox(height: 12),
-
+          InkWell(
+            onTap: () {
+              ThemeCustomizer.setTheme(
+                  ThemeCustomizer.instance.theme == ThemeMode.dark
+                      ? ThemeMode.light
+                      : ThemeMode.dark);
+            },
+            child: Icon(
+              ThemeCustomizer.instance.theme == ThemeMode.dark
+                  ? LucideIcons.sun
+                  : LucideIcons.moon,
+              size: 18,
+            ),
+          ),
           // Theme cards wrapped in reactive Obx widget
           Center(
             child: Obx(