diff --git a/plugins/Toolbox/resources/qml/ToolboxDetailPage.qml b/plugins/Toolbox/resources/qml/ToolboxDetailPage.qml
index 9e2e178b71..4e0bf67544 100644
--- a/plugins/Toolbox/resources/qml/ToolboxDetailPage.qml
+++ b/plugins/Toolbox/resources/qml/ToolboxDetailPage.qml
@@ -37,7 +37,7 @@ Item
                 leftMargin: UM.Theme.getSize("wide_margin").width
                 topMargin: UM.Theme.getSize("wide_margin").height
             }
-            color: "white" //Always a white background for image (regardless of theme).
+            color: UM.Theme.getColor("main_background")
             Image
             {
                 anchors.fill: parent
diff --git a/plugins/Toolbox/resources/qml/ToolboxDownloadsGridTile.qml b/plugins/Toolbox/resources/qml/ToolboxDownloadsGridTile.qml
index 7ced23aee9..70edee7449 100644
--- a/plugins/Toolbox/resources/qml/ToolboxDownloadsGridTile.qml
+++ b/plugins/Toolbox/resources/qml/ToolboxDownloadsGridTile.qml
@@ -21,7 +21,7 @@ Item
         id: thumbnail
         width: UM.Theme.getSize("toolbox_thumbnail_small").width
         height: UM.Theme.getSize("toolbox_thumbnail_small").height
-        color: "white"
+        color: UM.Theme.getColor("main_background")
         border.width: UM.Theme.getSize("default_lining").width
         border.color: UM.Theme.getColor("lining")