The number of rods and cones in iris effect your Default lives matter shirt of color. As well as a number of other things. What none of that goes to say is that it’s a magic thing in your brain changing things for everyone, or that your perception of reality in any way effects reality itself. Logically it’s pretty easy to figure things are, and can only be whatever they are, which is itself- whatever its aspects are. Including color. I bet if you hit someone with the chair and they hit you back it would seem pretty real. Everything is conciseness because nothing can experience without it. Doesn’t matter whether there is real reality or not. All I know is the image of reality. The physical things do not matter so much. It is the subconscious that plays its game if hallucination.