Looks to me from the pics and the wrinkled skin on his back and the smoothness... To Be a Leatherback. As far as the coloration goes, the bloodlines can be infinite guesses unless you can contact the breeder whom you got it from. Very Nice Orange/Yellows it has though! Good Luck!
I agree completely!! looks like a leatherback, some type of yellow/orange morph. but without knowing the breeder or the backround on the parents, your pretty much just guessing. either way, nice looking dragon.