diff --git a/resources/qml/Cura.qml b/resources/qml/Cura.qml
index 3a69523ced..99858c5331 100644
--- a/resources/qml/Cura.qml
+++ b/resources/qml/Cura.qml
@@ -53,7 +53,7 @@ UM.MainWindow
         id: greyOutBackground
         anchors.fill: parent
         visible: welcomeDialog.visible
-        color: "black"
+        color: UM.Theme.getColor("window_disabled_background")
         opacity: 0.7
         z: stageMenu.z + 1
     }
diff --git a/resources/themes/cura-light/theme.json b/resources/themes/cura-light/theme.json
index 9ef6993bdc..cfdf03bcaf 100644
--- a/resources/themes/cura-light/theme.json
+++ b/resources/themes/cura-light/theme.json
@@ -191,6 +191,8 @@
 
         "printer_type_label_background": [228, 228, 242, 255],
 
+        "window_disabled_background": [0, 0, 0, 255],
+
         "text_light_blue": [50, 130, 255, 255],
 
         "text": [25, 25, 25, 255],