Version: (using KDE 4.3.4) OS: Linux Installed from: Debian testing/unstable Packages If you disable flags kxkb shows some gray background with letters in the tray. It's looks really ugly (especially with composition enabled) and hard to read. I think this background should be removed. kxkb should simply display letters (with a text color according to a current plasma theme).
Currently kxkb is being rewritten as a kded daemon and plasma applet, hopefully that will make it in KDE4.5 and will look better.
Fixed in trunk - will be available in 4.5