highlight text

Hello everyone: I've had to reinstall SuSE 8.2 and one of the features I liked before but can't remember how I did it was to select the color used to highlight text in K-mail. For example, the default is white text on a blue background. I was able to change this to black text on an orange or deep yellow background but I've forgotten exactly where I made this change. Any suggestions greatly appreciated. Cheers, Mike