Generating Color Fields for Copper?

[spathi]

Are there some canonical algorithms for generating the smooth color lookup tables for copper, especially for the semi-metallic gradients on copperbars?  Do you simply move R, G, and B smoothly toward white and back on a sine function to give it the round gradation?

EDIT:  Well, I found this, which you most likely all know about:

http://demo-effects.sourceforge.net/

I write retro games that need to run on phones so some of the ways of making things look flashy and good have become useful once again.  Everything is a circle.

[Rbz]

Maybe the coopermaster source can be useful:
http://www.dbfinteractive.com/forum/index.php?topic=4673.msg62774#msg62774

[spathi]

You are... the man.

I guess I know what I'm doing tonight.