Index: /trunk/src/VBox/Frontends/VirtualBox/src/widgets/VBoxMiniToolBar.cpp
===================================================================
--- /trunk/src/VBox/Frontends/VirtualBox/src/widgets/VBoxMiniToolBar.cpp	(revision 35077)
+++ /trunk/src/VBox/Frontends/VirtualBox/src/widgets/VBoxMiniToolBar.cpp	(revision 35078)
@@ -126,7 +126,4 @@
     /* Enable mouse-tracking for this & children allowing to get mouse-move events: */
     setMouseTrackingEnabled(m_fAutoHide);
-
-    /* Auto-fill background to make it use own color: */
-    setAutoFillBackground(true);
 }
 
@@ -358,5 +355,5 @@
     QPainter painter;
     painter.begin(this);
-    painter.fillRect(pEvent->rect(), palette().brush(QPalette::Window));
+    painter.fillRect(pEvent->rect(), QApplication::palette().color(QPalette::Active, QPalette::Window));
     painter.end();
     /* Base-class paint event processing: */