AeroRainbow

Aero Rainbow is a simple application that constantly changes the color of your windows in Windows Aero, giving it a much more dynamic and interesting look.

From the options, you can set which colors you want the application to alternate between. You can also leave this part blank and let the application run through all the colors of the rainbow.

Aero Rainbow is an interesting application if you like to change the look of your desktop often. With Aero Rainbow, a new color will appear on your screen every few seconds.