Index: sources/gui/qml/components/Circle.qml
===================================================================
diff -u -rdb2238dcf17941be6a3c587b55a3ef06b94cee96 -r2216ac6ac7f77437a7c29ac8b4043be01bc4609e
--- sources/gui/qml/components/Circle.qml	(.../Circle.qml)	(revision db2238dcf17941be6a3c587b55a3ef06b94cee96)
+++ sources/gui/qml/components/Circle.qml	(.../Circle.qml)	(revision 2216ac6ac7f77437a7c29ac8b4043be01bc4609e)
@@ -47,9 +47,9 @@
         width   : _root.width
         height  : _root.height
         radius  : _root.width
-        color   : "Transparent"
+        color   : Colors.transparent
         border.width: _root.thickness + shadowEdge * 2
-        border.color: "Transparent"
+        border.color: Colors.transparent
         antialiasing: true
         Shape { id: _shape
             width: parent.width
@@ -58,7 +58,7 @@
             layer.smooth: true
             layer.textureSize: Qt.size(_shape.width * 2, _shape.height * 2)
             ShapePath { id: _path
-                fillColor: "Transparent"
+                fillColor: Colors.transparent
                 strokeColor: Colors.borderButton
                 strokeWidth: 1
                 capStyle: ShapePath.RoundCap