Tiiiiiny animation with simple shape. I think this is the best way to improve on animations, step by step!
There is no gradients, I divided the hue scale in 24 parts to make a nice chromatic loop.
What do you mean exactly with base colors?
Are those gradients on the base colors? http://akira.hopto.org/pj/?input=http%3A%2F%2Fwww.pixeljoint.com%2Fpixelart%2F93169.htm%3Fmsg%3Dthx
If yes, then they have to be removed, k.
What do you mean exactly with base colors?