I read the comments, but I couldn't find anything concerning my topic, so....
I was wondering how you get the rainbow effect, but moving across something, like

ROYGBIV to VROYGBI, etc.
[really sorry I couldn't provide a picture =\]

It's a smooth transition, so it's not blinky or fading into the next color. It's already a rainbow, and the colors are moving.

If you can help, I really appreciate it!
[and owe you a very big thank you =D]

[oh.. um hm fuckingxcute_ /end shameless promo]