There are some registries and pedigrees, but I think the OP was referring to an actual standard like show dogs/cats/rats/rabbits have. Think almost like a conformation standard.
This couldn't ever work with snakes because there is no conformation to breed to. There is no standard size, weight, etc for most snakes and there is no point to showing them in the way that you do with dogs and cats. The only thing we breed for seems to be general health and color. That isn't enough things to make a standard for. If an animal is "out of standard" its immediately identifiable as deformed (think two headed snakes, snakes with no eyes, snakes with one eye, no nostrils, etc).
I just don't see how this could ever come into any kind of useful play.