Index: sources/gui/qml/components/Slider.qml
===================================================================
diff -u -r95a840fc93f1a2cd65732d835fad2aca0f03f28e -rcb5477be624b09e13d5fc4498634ca621722fd0e
--- sources/gui/qml/components/Slider.qml	(.../Slider.qml)	(revision 95a840fc93f1a2cd65732d835fad2aca0f03f28e)
+++ sources/gui/qml/components/Slider.qml	(.../Slider.qml)	(revision cb5477be624b09e13d5fc4498634ca621722fd0e)
@@ -49,10 +49,10 @@
     function setActive(active) {
         if (active) {
             color = Colors.createTreatmentActive
-            knobColor = Colors.createTreatmentActive
+            handlerColor = Colors.createTreatmentActive
         } else {
             color = Colors.createTreatmentInactive
-            knobColor = Colors.createTreatmentInactive
+            handlerColor = Colors.createTreatmentInactive
         }
 
         if (active !== isActive) {