diff --git a/plugins/Toolbox/resources/qml/ToolboxDetailPage.qml b/plugins/Toolbox/resources/qml/ToolboxDetailPage.qml
index 437a2ef351..0c04dc2bab 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: "white" //Always a white background for image (regardless of theme).
             Image
             {
                 anchors.fill: parent
diff --git a/resources/qml/MainWindow/MainWindowHeader.qml b/resources/qml/MainWindow/MainWindowHeader.qml
index ceb27dd726..a24af7ee45 100644
--- a/resources/qml/MainWindow/MainWindowHeader.qml
+++ b/resources/qml/MainWindow/MainWindowHeader.qml
@@ -81,10 +81,12 @@ Rectangle
         height: Math.round(0.5 * UM.Theme.getSize("main_window_header").height)
         onClicked: Cura.Actions.browsePackages.trigger()
 
+        hoverEnabled: true
+
         background: Rectangle
         {
             radius: UM.Theme.getSize("action_button_radius").width
-            color: "transparent"
+            color: marketplaceButton.hovered ? UM.Theme.getColor("primary_text") : UM.Theme.getColor("main_window_header_background")
             border.width: UM.Theme.getSize("default_lining").width
             border.color: UM.Theme.getColor("primary_text")
         }
@@ -93,7 +95,7 @@ Rectangle
         {
             id: label
             text: marketplaceButton.text
-            color: UM.Theme.getColor("primary_text")
+            color: marketplaceButton.hovered ? UM.Theme.getColor("main_window_header_background") : UM.Theme.getColor("primary_text")
             width: contentWidth
         }
 
diff --git a/resources/themes/cura-light/theme.json b/resources/themes/cura-light/theme.json
index 001818c2f8..2343cd3f2a 100644
--- a/resources/themes/cura-light/theme.json
+++ b/resources/themes/cura-light/theme.json
@@ -80,7 +80,7 @@
         "thick_lining": [127, 127, 127, 255],
         "lining": [192, 193, 194, 255],
         "viewport_overlay": [0, 0, 0, 192],
-        
+
         "primary": [50, 130, 255, 255],
         "primary_shadow": [64, 47, 205, 255],
         "primary_hover": [48, 182, 231, 255],