tdf#107224 use correct bg for notebookbar

Change-Id: I26093cb9cf0170aa9ba4ccfc8c8556c2e78086b3
Reviewed-on: https://gerrit.libreoffice.org/43515Reviewed-by: Szymon Kłos <szymon.klos@collabora.com>
Tested-by: Szymon Kłos <szymon.klos@collabora.com>

vcl/source/control/notebookbar.cxx

@@ -173,7 +173,7 @@ void NotebookBar::UpdateBackground()
     if (!aPersona.IsEmpty())
         SetBackground(Wallpaper(aPersona));
     else
-        SetBackground(rStyleSettings.GetMenuBarColor());
+        SetBackground(rStyleSettings.GetDialogColor());
 
     Invalidate(tools::Rectangle(Point(0,0), GetSizePixel()));
 }