Crossposting this from my Tumblr. Basically, it's for anyone interested in where the 'Wolves colors come from. I'm probably going to add body shapes to this next.
Still putzing around with this but here's a few ideas I had (not quite genetics yet, just a general overview):
Dark colored Dire Wolves tend to come from more mountainous areas still below the snow line (and mainly in the bluish/grey coloration), or in thickly forested places (where dark brown in more common). Spots are more common in the mountains while stripes and points are more common in forested areas.
Very pale blue is most typical in populations above the snow line, followed by very pale tan. Light grey is less common, but still crops up from time to time. They don't normally have any markings for better camouflage against the snow.
Plains 'Wolves are usually in the tan range and may have very light spots, stripes, or a dorsal stripe (the more typical of the three). It's the same for desert wolves, except in some places they can also be really pale, or a striking terra cotta red.
Most of this is kind of pointless now, given how they've all interbred and exchanged genes and can genetically alter their fur colors, though if a modified 'Wolf has babies, the genetics of color are still based on what their actual coloration is. I don't think it modifies their whole genetic code so much as 'sits on top of' and 'overrides' their existing genes. They may even be coated in a protein or something that deactivates them so weird and/or bad shit doesn't happen when genes are passed on. I mean that as far as if the genes try to copy the false color instead of the actual color, and if by doing that it could cause potential health problems.