Rename the Color singleton to avoid the Qt 6.12 clash

shell/plugins/notifications/components/NotificationCard.qml

@@ -46,10 +46,10 @@ BorderSurface {
   readonly property string sanitizedBody: sanitizeBody(body)
   readonly property string styledBody: NotificationLogic.styledBody(body, app, appIcon)
 
-  readonly property color dimColor: Qt.darker(Color.notifications.text, 1.4)
-  readonly property color bodyColor: Qt.darker(Color.notifications.text, 1.15)
-  readonly property color accentColor: urgency === 2 ? Color.urgent : (urgency === 0 ? dimColor : Color.notifications.countdown)
-  readonly property var cardBorderSpec: Border.surfaceSpec("notifications", "border", Color.notifications.border, Math.max(1, Style.space(2)))
+  readonly property color dimColor: Qt.darker(Colors.notifications.text, 1.4)
+  readonly property color bodyColor: Qt.darker(Colors.notifications.text, 1.15)
+  readonly property color accentColor: urgency === 2 ? Colors.urgent : (urgency === 0 ? dimColor : Colors.notifications.countdown)
+  readonly property var cardBorderSpec: Border.surfaceSpec("notifications", "border", Colors.notifications.border, Math.max(1, Style.space(2)))
 
   function sanitizeBody(s) {
     return NotificationLogic.sanitizeBody(s, app, appIcon)
@@ -68,7 +68,7 @@ BorderSurface {
   // doesn't push content under the bottom edge.
   implicitHeight: mainColumn.implicitHeight + borderTop + borderBottom
   radius: cornerRadius
-  color: Color.notifications.background
+  color: Colors.notifications.background
   borderSpec: cardBorderSpec
   clip: true
 
@@ -137,7 +137,7 @@ BorderSurface {
           anchors.centerIn: parent
           visible: root.hasGlyph && smallIconImage.status !== Image.Ready
           text: root.glyph
-          color: Color.notifications.text
+          color: Colors.notifications.text
           font.family: root.fontFamily
           font.pixelSize: Style.font.displayLarge
         }
@@ -148,7 +148,7 @@ BorderSurface {
         Layout.alignment: Qt.AlignVCenter
         visible: root.compactGlyph
         text: root.glyph
-        color: Color.notifications.text
+        color: Colors.notifications.text
         font.family: root.fontFamily
         font.pixelSize: Style.font.icon
       }
@@ -168,7 +168,7 @@ BorderSurface {
           visible: root.summary.length > 0
           text: root.summary
           font.family: "Liberation Sans"
-          color: Color.notifications.text
+          color: Colors.notifications.text
           font.pixelSize: Style.font.title
           font.bold: true
           wrapMode: Text.WordWrap