Switched to Material3 colors principle

- works with matugen only for now
- need to restore rosepine

Modules/Background/Overview.qml

@@ -62,7 +62,7 @@ NLoader {
 
       Rectangle {
         anchors.fill: parent
-        color: Qt.rgba(Colors.backgroundPrimary.r, Colors.backgroundPrimary.g, Colors.backgroundPrimary.b, 0.5)
+        color: Qt.rgba(Colors.colorSurface.r, Colors.colorSurface.g, Colors.colorSurface.b, 0.5)
       }
     }
   }

Modules/Background/ScreenCorners.qml

@@ -17,7 +17,7 @@ NLoader {
       required property ShellScreen modelData
 
       // Visible ring color
-      property color ringColor: Colors.backgroundPrimary
+      property color ringColor: Colors.colorSurface
       // The amount subtracted from full size for the inner cutout
       // Inner size = full size - borderWidth (per axis)
       property int borderWidth: Style.borderMedium