Rename the Color singleton to avoid the Qt 6.12 clash

shell/Ui/StatRow.qml

@@ -17,7 +17,7 @@ Item {
     width: Style.spaceReal(22)
     text: root.icon
     textFormat: Text.PlainText
-    color: Color.magenta
+    color: Colors.magenta
     font.family: Style.font.family
     font.pixelSize: Style.font.body
   }
@@ -29,7 +29,7 @@ Item {
     anchors.verticalCenter: parent.verticalCenter
     text: root.label
     textFormat: Text.PlainText
-    color: Color.foreground
+    color: Colors.foreground
     font.family: Style.font.family
     font.pixelSize: Style.font.bodySmall
   }
@@ -43,7 +43,7 @@ Item {
     elide: Text.ElideRight
     text: root.value
     textFormat: Text.PlainText
-    color: Color.foreground
+    color: Colors.foreground
     font.family: Style.font.family
     font.pixelSize: Style.font.bodySmall
     font.bold: true