Any Suggesstion for simple, unobstructive java script color picker?

I've been impressed with this library http://extjs.com/ check out the menu example for the color picker...

http://extjs.com/deploy/dev/examples/menu/menus.html

This is for prototype/scriptaculous (not jQuery) but I thought I'd let you know anyway:

http://www.knallgrau.at/code/colorpicker

I use it on my web app; Twitter also uses it.

i don't have any direct from experience suggestions, but there are several plugins under jquery's plugin page:

http://plugins.jquery.com/search/node/color+picker