Small style fix when using Qt 4.5
--- a/src/SideBarView.cpp
+++ b/src/SideBarView.cpp
@@ -133,7 +133,7 @@
     else
     {
         setStyle( new TreeStyle<QPlastiqueStyle> );
-        setStyleSheet( "QTreeView { border: 0px }" );
+        setStyleSheet( "QTreeView { border: 0px; background: white; }" );
     }
 
 #endif