To follow up my own post . . . | 2) The tooltip of gnubiff in my system tray use the same | color combination as gimp. (The other system-tray | items, such as KOrganizer, use black text on yellow | background.) Using "KDE tooltip background" on Google shows some postings in various forums and mailing lists discussing the same problem. It seems that the light-yellow background color of tooltips is hardwired in KDE < 4 and that you can't change it unless you recompile KDE. Mystery still remains as to why tooltips of KDE apps use black text color whereas those of non-KDE apps use the text color (white in my case) specified in the KDE Control Center. In KDE 4, if I understand correctly what I gathered from the Internet, it seems that tooltips are themable, and so I hope this problem will go away. Regards, Ryo ___________________________________________________ This message is from the kde mailing list. Account management: https://mail.kde.org/mailman/listinfo/kde. Archives: http://lists.kde.org/. More info: http://www.kde.org/faq.html.