I'm not a hunter, I've never shot a dear and I don't think I ever will. I do go hiking though.
Let’s say it comes across as “grey” for argument’s sake. But they CAN apparently distinguish all the shades of green and brown and that is why you are dressed like John Duty. Which means… they have a giant blob of “grey” moving around? Pretty sure that would stick out…
When you hear the term "red-green color blindness", do you think that red and green appear grey to those people while they can still see orange, yellow, and blue the same as everyone else? And that they go through their lives with these super high contrast grey objects everywhere?
That's not how eyes work. Color blindness means an inability to distinguish between shades of colors, not that they have some sort of selective filters that block those colors out, turn objects of that color invisible, or convert them to grey.
Homie. Go spend even twenty minutes walking around a park in a mountain town. Deer don’t give a fuck.
You think this because you live in a suburb where people feed them, "in a park", or "bordering a forested area". No unconditioned wild animal in the world, except maybe things that live on tiny islands with no predators, is chill with an unknown human sized animal standing next to it.
When I hike I sometimes see deer as close as a hundred feet or so away, but if one started walking towards me I would consider that behavior so far out of the ken that I might think it has rabies or wasting disease.
Understand that I'm not even arguing that shooting a deer is some sort of crazy achievement.