Basically it means you're going to see color variations within a population, or even within a single litter. The orange likely isn't the result single allele (gene) and therefore is neither dominant, codominant, or recessive. Those terms are for when a certain color or trait is the result of a single point gene. (allele)

Polymorphism: The Northwestern Gartersnake (Thamnophis ordinoides) - Diamondback Trading Cards

I guess what I'm trying to say is that you can breed your orange snakes but that doesn't mean the orange will be fully expressed outwardly in all the offspring. Inheritance will vary just as it does with flames.