The only you gotta do is, have a black and white pic. Then go to Image, and then Modes Make sure RGB is checked. then click ok. Then go to llayers and scroll down and click on "Color"
Then you pick your color, and the paint tool and that's it.
If you want the skin colors let me know... I have 2 different skin tones, so I dunno if they'll look right with the pic you'd use.