diff --git a/plugins/UM3NetworkPrinting/ClusterControlItem.qml b/plugins/UM3NetworkPrinting/ClusterControlItem.qml
index f2e2b601f2..e4e3d890a0 100644
--- a/plugins/UM3NetworkPrinting/ClusterControlItem.qml
+++ b/plugins/UM3NetworkPrinting/ClusterControlItem.qml
@@ -6,11 +6,13 @@ import Cura 1.0 as Cura
 
 Component
 {
-    Item
+    Rectangle
     {
         id: base
         property var manager: Cura.MachineManager.printerOutputDevices[0]
         anchors.fill: parent
+        color: UM.Theme.getColor("viewport_background")
+
         property var lineColor: "#DCDCDC" // TODO: Should be linked to theme.
         property var cornerRadius: 4 * screenScaleFactor // TODO: Should be linked to theme.
 
diff --git a/plugins/UM3NetworkPrinting/ClusterMonitorItem.qml b/plugins/UM3NetworkPrinting/ClusterMonitorItem.qml
index 48fb0a33fc..497b762ea9 100644
--- a/plugins/UM3NetworkPrinting/ClusterMonitorItem.qml
+++ b/plugins/UM3NetworkPrinting/ClusterMonitorItem.qml
@@ -10,8 +10,8 @@ Component
     Rectangle
     {
         width: maximumWidth
-        height: maximumHeight
-        color: "#FFFFFF" // TODO; Should not be hardcoded.
+        height: maximumHeight        
+        color: UM.Theme.getColor("viewport_background")
 
         property var emphasisColor: "#44c0ff" //TODO: should be linked to theme.
         property var lineColor: "#DCDCDC" // TODO: Should be linked to theme.
diff --git a/resources/themes/cura-dark/theme.json b/resources/themes/cura-dark/theme.json
index 187896aa28..f39fe96c37 100644
--- a/resources/themes/cura-dark/theme.json
+++ b/resources/themes/cura-dark/theme.json
@@ -16,7 +16,7 @@
         "secondary": [241, 242, 242, 255],
 
         "topbar_background_color": [0, 0, 0, 0],
-        "topbar_background_color_monitoring": [39, 44, 48, 255],
+        "topbar_background_color_monitoring": [0, 0, 0, 0],
 
         "topbar_button_text_active": [255, 255, 255, 255],
         "topbar_button_text_inactive": [128, 128, 128, 255],
diff --git a/resources/themes/cura-light/theme.json b/resources/themes/cura-light/theme.json
index 62e22e4f0d..74b6bfb7ab 100644
--- a/resources/themes/cura-light/theme.json
+++ b/resources/themes/cura-light/theme.json
@@ -68,7 +68,7 @@
         "secondary": [245, 245, 245, 255],
 
         "topbar_background_color": [255, 255, 255, 0],
-        "topbar_background_color_monitoring": [255, 255, 255, 255],
+        "topbar_background_color_monitoring": [255, 255, 255, 0],
 
         "topbar_button_text_active": [0, 0, 0, 255],
         "topbar_button_text_inactive": [128, 128, 128, 255],