We are conditioned to associate orange with hunters, years ago it was red, animals won't use that logic. You give animals way to much human logic whe thinking about camo, same as fishing lures what sell is most how well it looks in the store not always how the fish perceive it). Hunter gatherers used natural colors (animal skins, local leafed branches for millenia way before our modern camo even was thought of, worked for them). Animals use a combinations of movement, smells, sounds, sight (background blending and shape) and intent (I never look directly at my prey until I am ready, I don't hunt hungry, I wash/smudge with local vegetation etc...).