Index: sources/gui/qml/components/Slider.qml
===================================================================
diff -u -ra5760947d3ed0d2748ba023a1c25e3c6aa0b1de1 -r67557d6769a1719e2a1c068303bda9816075dd84
--- sources/gui/qml/components/Slider.qml	(.../Slider.qml)	(revision a5760947d3ed0d2748ba023a1c25e3c6aa0b1de1)
+++ sources/gui/qml/components/Slider.qml	(.../Slider.qml)	(revision 67557d6769a1719e2a1c068303bda9816075dd84)
@@ -40,6 +40,7 @@
     property alias  handler            : _handler
     property alias  handlerColor       : _handler.color
     property alias  handlerVisible     : _handler.visible
+    property color  handleBorderColor   : Colors.textMain
 
     property alias  diameter           : _handler.diameter
 
@@ -341,7 +342,7 @@
         color   : Colors.highlightProgressBar
         border  {
             width: Variables.progressbarHandlerBorderWidth
-            color: Colors.textMain
+            color: _root.handleBorderColor
         }
         MouseArea {
             anchors.fill: parent