As you can see tribalbellydancer you dont have to get sepia toned or black and white pictures you can get any coloured pictures open them up in photoshop and do it yourself, that way you can use any picture you want.
I find the pictures that print out the best quality are desktop wallpapers (thats what i use anyway).
heres a picture i found on the google image and changed it on photoshop (sorry about the giant images lol).
hope this helps.