The genetics of this cultivar is a combination of amelanism and type 'A' anerythrism. It doesn't seem like so very long ago that the Snow corn was the epitome of genetic experimentation in the corn snake. Life was much simpler back then when we only had normals, Amelanistics, Anerythristics, and Snows to deal with. Anything new that came along that we felt might be a new genetic trait could be bred to a Snow, and the results would immediately tell us whether the 'new' genetic trait was really something new, or just a variant of the existing gene pool we had to deal with. Compare that with the problems facing us today, when any potentially new genetic trait has a whole battery of breeding trials to go through before it can be safely claimed to be a new gene. It has probably reached the point to where it would be much easier to claim what a potential new gene is NOT, rather than what it IS. Quite possibly a line of corn snakes homozygous for ALL of the currently existing genes would be quite valuable just as a testing tool for a new gene. But this line would immediately become obsolete as soon as a new gene were discovered, and the hurtle to overcome to produce a new multi-homozygous line combining all of the traits would be MUCH higher than the last one.
Those simpler days have passed, but the Snow corn is still very popular and an eye-catcher. The coloration is rather variable between individuals, but is basically a strongly patterned snake with a white background. The background color can vary somewhat, and be anything from a bold pink color to snow white. Some of the pinker varieties have taken on their own name of 'Bubblegum Corn', which turns out can be either a completely pink Snow corn or one that has a pink ground color with greenish colored blotches. The blotches in the typical Snow corn can be pale shades of yellow, orange, tan, beige, pink, lavender or green. A lot depends on what sort of stock they originated from and possibly even some of the other genetic influences might only be a subtle influence in the Snow rather than something that is starkly apparent. Nearly all of them will have bold yellow markings on the sides of the head and neck, but even that is not a given any longer. There has been a blurring of the lines between the Blizzards and the Snows when you will see some animals that look decidedly 'in between'.