CURA-5035 More progress

plugins/PluginBrowser/resources/qml/PluginBrowser.qml

@@ -33,6 +33,7 @@ Window
         {
             id: mainView
             width: parent.width
+            color: "red"
             anchors
             {
                 top: topBar.bottom

plugins/PluginBrowser/resources/qml/ToolboxViewDetail.qml

@@ -7,11 +7,13 @@ import QtQuick.Controls 1.4
 import QtQuick.Controls.Styles 1.4
 import UM 1.1 as UM
 
+// TODO: Switch to QtQuick.Controls 2.x and remove QtQuick.Controls.Styles
+
 Item
 {
     id: base
     anchors.fill: parent
-    Rectangle
+    Item
     {
         id: backMargin
         height: parent.height
@@ -31,7 +33,6 @@ Item
                 manager.setDetailView("")
             }
         }
-        color: "transparent"
     }
     ScrollView
     {