Wow, really interesting. In New Jersey over the many decades I've come upon several deer with out-of-the-norm colors. They were all adults, so it apparently didn't interfere all that terribly with their ability to survive. One coal black, several dark sables, one snow white, two pale cream, a few light tannish, lots with one or more white sox on their feet, and a few that were pied (large white blotches over the normal coloration). I always came upon them when I didn't have a camera on me. But then, we didn't have iPhones then and cameras weren't something you carried around in your pocket!
It's never too late to start! I retired to homestead on the slopes of Mauna Loa, an active volcano. I relate snippets of my endeavor on my blog : www.kaufarmer.blogspot.com