Rainbox is a "psychedelic" paint program, which uses palette animation to make your drawings
appear as if they're moving. Rainbox is freeware.
Download Rainbox 1.3 for Mac (about 100K)
(PC users should check out LiquidPaint, a similar program by Christopher Emirzian.)
Rainbox also includes a screensaver module for "DarkSide of the Mac",
that will let you use your Rainbox pictures as screensavers.
Download Darkside of the Mac