Index: sources/gui/qml/pages/pretreatment/PreTreatmentPrimeStack.qml
===================================================================
diff -u -rbb93d05bea8defa9ff689ceda63d03e5233da855 -rf11d215b883d5f59823f118f85f79e99b4a0b7f6
--- sources/gui/qml/pages/pretreatment/PreTreatmentPrimeStack.qml	(.../PreTreatmentPrimeStack.qml)	(revision bb93d05bea8defa9ff689ceda63d03e5233da855)
+++ sources/gui/qml/pages/pretreatment/PreTreatmentPrimeStack.qml	(.../PreTreatmentPrimeStack.qml)	(revision f11d215b883d5f59823f118f85f79e99b4a0b7f6)
@@ -76,7 +76,7 @@
                     width       : parent.spacing
                     text.text   : qsTr("Start  Prime")
                     onClicked   : _root.startPrimeClicked()
-                    bgColor     : Colors.backgroundButtonSelect
+                    backgroundColor : Colors.backgroundButtonSelect
                 }
                 // , // commented out in demo feedback kept if needed to have any other screen later
                 // Text { id: _recirculateText