Version: (using KDE KDE 3.1) Installed from: Debian testing/unstable Packages In the Colour Preferences dialog (Settings -> Configure KOrganizer... -> Colors), when changing the colour of a category, the change doesn't stick the first time. If I change the colour and press okay, no change happens. I have to change the colour, press apply, change the colour AGAIN and then press okay for the change to actually work. The other colours (Holiday colour, highlight colour etc...) change first go, no problems. It's just the colours for the categories.
Fixed in CVS. Will be in 3.1.1.