| on the K10D I take a trial shot, and then while the image is still im the buffer (no on off etc...) I hit Fn, Select WB and make any adjustments I want, and at the same time, you can see the image change interactively. The resulting setting is then applied to all subsequent shots.
Once home and post processing, if you use the color balance (PSPX2 any way, and select a subject that is neutral (i.e. white black or grey) the color balance can be set. You can adjust color temperature and hue at that time also, off the suggested settings |