>As I said, try to find a formula to convert Hue/Sat/Lum parameters for color to RGB. This will give you a smooth colours approach.

I worked on that yesterday and was not able to find the proper way of doing it. The actual color picker is the one which I found the best so far. Of course, if I could succeed in the LViewPro type approach, that'd be perfect. It's just a question of knowing the proper way to do it.