http://wrstud.urz.uni-wuppertal.de/~ka0394/en/blender_ui/panel_tabs/panel_simplified.png Black on dark gray is not so good, so I created this: http://wrstud.urz.uni-wuppertal.de/~ka0394/en/blender_ui/panel_tabs/panel_outline.png Maybe a bit subtle, but there's room for tweaking. What do you think? --- Thorsten