diff --git a/resources/qml/ExtruderIcon.qml b/resources/qml/ExtruderIcon.qml
index c44b6e0fa3..fcc49c9040 100644
--- a/resources/qml/ExtruderIcon.qml
+++ b/resources/qml/ExtruderIcon.qml
@@ -49,7 +49,7 @@ Item
             anchors.centerIn: parent
             text: index + 1
             font: UM.Theme.getFont("very_small")
-            color: UM.Theme.getColor("text") 
+            color: UM.Theme.getColor("text")
             width: contentWidth
             height: contentHeight
             visible: extruderEnabled
diff --git a/resources/qml/PrintSetupSelector/Custom/CustomPrintSetup.qml b/resources/qml/PrintSetupSelector/Custom/CustomPrintSetup.qml
index b28c9ceb46..26ca4deec6 100644
--- a/resources/qml/PrintSetupSelector/Custom/CustomPrintSetup.qml
+++ b/resources/qml/PrintSetupSelector/Custom/CustomPrintSetup.qml
@@ -113,9 +113,11 @@ Item
         }
         z: tabBar.z - 1
         // Don't show the border when only one extruder
+
         border.color: tabBar.visible ? UM.Theme.getColor("lining") : "transparent"
         border.width: UM.Theme.getSize("default_lining").width
 
+        color: UM.Theme.getColor("main_background")
         Cura.SettingView
         {
             anchors
diff --git a/resources/themes/cura-dark/theme.json b/resources/themes/cura-dark/theme.json
index 2fa96c8897..cade342488 100644
--- a/resources/themes/cura-dark/theme.json
+++ b/resources/themes/cura-dark/theme.json
@@ -99,11 +99,11 @@
         "scrollbar_handle_hover": [255, 255, 255, 255],
         "scrollbar_handle_down": [255, 255, 255, 255],
 
-        "setting_category": [39, 44, 48, 255],
-        "setting_category_disabled": [39, 44, 48, 255],
-        "setting_category_hover": [39, 44, 48, 255],
-        "setting_category_active": [39, 44, 48, 255],
-        "setting_category_active_hover": [39, 44, 48, 255],
+        "setting_category": [75, 80, 83, 255],
+        "setting_category_disabled": [75, 80, 83, 255],
+        "setting_category_hover": [75, 80, 83, 255],
+        "setting_category_active": [75, 80, 83, 255],
+        "setting_category_active_hover": [75, 80, 83, 255],
         "setting_category_text": [255, 255, 255, 152],
         "setting_category_disabled_text": [255, 255, 255, 101],
         "setting_category_hover_text": [255, 255, 255, 204],