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/common/edit_chip.dart

@@ -14,7 +14,7 @@ class EditChip extends StatelessWidget {
     this.label = 'Edit',
     required this.onTap,
     this.labelColor = ColorsManager.spaceColor,
-    this.backgroundColor = ColorsManager.whiteColors,
+    this.backgroundColor = ColorsManager.white,
     this.borderColor = ColorsManager.spaceColor,
     this.borderRadius = 16.0,
   }) : super(key: key);
@@ -24,10 +24,9 @@ class EditChip extends StatelessWidget {
     return GestureDetector(
       onTap: onTap,
       child: Chip(
-        label: Text(
-          label,
-          style: Theme.of(context).textTheme.bodySmall!.copyWith(color: labelColor)
-        ),
+        label: Text(label,
+            style:
+                Theme.of(context).textTheme.bodySmall!.copyWith(color: labelColor)),
         backgroundColor: backgroundColor,
         shape: RoundedRectangleBorder(
           borderRadius: BorderRadius.circular(borderRadius),