Going through an old box of books in the garage and came across The Ball Python Manual by Philippe de Vosjoli, Roger Klingenberg, David and Tracy Barker. (copyright 1995) I found a couple of interesting quotes I thought we could all get a grin at.
(regarding types of ball pythons)
Leucistic: This is the condition of absolute white coloration, no pattern, and dark eyes. We know of only two examples of this condition, and both specimens died soon after hatching.
Clown: In this morph, which is probably not of genetic origin, the middorsal series of light-colored blotches is absent and the light-color lateral blotches are extended and fused.
It just amazes me how far we've come with these snakes in 10 years. No mention of spiders, lessers, pastels(though there is a "high gold" pic I strongly suspect is), or mojave.