Thanks for the Video link Sneezy. I dont have photoshop, but I do have Gimp! Gotta love opensource! I did these. while it did take me a bit to figure out how to do the proper layer to get it to work, once i did, it was REALLY EASY. These were taken with my Iphone, so they are not the best.

1. open image
2. create duplicate layer
3. with new layer selected (defaults to it) Click colors, Map, Gradient Map
4. right click on the layer in the Layers window (if you dont have it, click windows then layers channel and paths) and then click add Layer mask, leave white selected and click add.
then I painted.

notes: also in the layers dockable window, you have 3 tabs at the bottom. click on teh far right one and make sure FB to BG (RGB) is selected. otherwise you can paint some funky things.