I know Kodak Gallery program will do this. It's an easy edit. Just change your picture its one of the options like turning the photo black & white or sepia.
Some of the programs that come with digital cameras also have this function.
Crayola.com has this now two. "Lights Camera Color". I know there is a code in certain boxes of Crayola crayons (the 64 ct box had them in Staples the other day).
I just tried it and its free:
http://play-zone.crayola.com/play-zone/index.htm#/LCC