Refactor color management and UI components for consistency

- Updated color references in various widgets to use the new `opaquePrimary` color for better visual consistency.
- Refactored `ColorsManager` to improve color definitions and removed redundant color declarations.
- Enhanced UI elements across multiple dialogs and widgets to ensure a cohesive design language.

This change promotes maintainability and aligns with the updated color scheme.

lib/pages/space_management_v2/main_module/shared/widgets/community_dialog.dart

@@ -50,7 +50,7 @@ class _CommunityDialogState extends State<CommunityDialog> {
         width: MediaQuery.of(context).size.width * 0.3,
         padding: const EdgeInsets.all(20),
         decoration: BoxDecoration(
-          color: ColorsManager.whiteColors,
+          color: ColorsManager.white,
           borderRadius: BorderRadius.circular(20),
           boxShadow: [
             BoxShadow(
@@ -110,7 +110,7 @@ class _CommunityDialogState extends State<CommunityDialog> {
           }
         },
         borderRadius: 10,
-        foregroundColor: ColorsManager.whiteColors,
+        foregroundColor: ColorsManager.white,
         child: const Text('OK'),
       ),
     );

lib/pages/space_management_v2/main_module/widgets/community_structure_header.dart

@@ -17,7 +17,7 @@ class CommunityStructureHeader extends StatelessWidget {
     return Container(
       padding: const EdgeInsets.symmetric(horizontal: 16.0, vertical: 16.0),
       decoration: BoxDecoration(
-        color: ColorsManager.whiteColors,
+        color: ColorsManager.white,
         boxShadow: [
           BoxShadow(
             color: ColorsManager.shadowBlackColor.withValues(alpha: 0.1),

lib/pages/space_management_v2/main_module/widgets/plus_button_widget.dart

@@ -16,7 +16,7 @@ class PlusButtonWidget extends StatelessWidget {
       style: IconButton.styleFrom(backgroundColor: ColorsManager.spaceColor),
       icon: const Icon(
         Icons.add,
-        color: ColorsManager.whiteColors,
+        color: ColorsManager.white,
         size: 20,
       ),
     );

lib/pages/space_management_v2/main_module/widgets/space_cell.dart

@@ -56,7 +56,7 @@ class SpaceCell extends StatelessWidget {
         child: SvgPicture.asset(
           icon,
           colorFilter: const ColorFilter.mode(
-            ColorsManager.whiteColors,
+            ColorsManager.white,
             BlendMode.srcIn,
           ),
           width: 24,
@@ -68,7 +68,7 @@ class SpaceCell extends StatelessWidget {
 
   BoxDecoration _containerDecoration() {
     return BoxDecoration(
-      color: ColorsManager.whiteColors,
+      color: ColorsManager.white,
       borderRadius: BorderRadius.circular(15),
       boxShadow: [
         BoxShadow(

lib/pages/space_management_v2/main_module/widgets/space_management_templates_view.dart

@@ -8,7 +8,7 @@ class SpaceManagementTemplatesView extends StatelessWidget {
   @override
   Widget build(BuildContext context) {
     return ColoredBox(
-      color: ColorsManager.whiteColors,
+      color: ColorsManager.white,
       child: GridView.builder(
         padding: const EdgeInsets.symmetric(horizontal: 40, vertical: 20),
         gridDelegate: const SliverGridDelegateWithMaxCrossAxisExtent(