We also know that the experience of color is governed by the physical brain.
I agree that the brain processes the signals from the eye and constructs the sensations that we experience as sight, but the color component is primarily determined by the opsins in the cone photoreceptor cells of the eye activating wavelength specific nerves.
People with a common type of color blindness have told me that often they cannot differentiate between red and green. They are missing or have a mutation in the gene that produces one of the opsin photopigments. There are also people who have trouble with blue and yellow perception. I try to imagine what the world looks like to them.
My boss in the insect lab was red/green color blind and occasionally would forget and tell me to shoot a specific colored part of an insect that didn't look to me like it did to him. What a shame that he could not see some of the extraordinarily beautiful patterns on the insects that he studies. I was able to show some of them to him by replacing the original color in an image with one he could see.
I found a really interesting paper:
The genetics of normal and defective color vision, by Jay Neitz and Maureen Neitz, 2012, PubMed Central (PMC) is a free full-text archive of biomedical and life sciences journal literature at the U.S. National Institutes of Health's National Library of Medicine (NIH/NLM).
It will take me a while to read this one.
What if Eleanor Roosevelt had wings? -- Monty Python
One important characteristic of a theory is that is has survived repeated attempts to falsify it. Contrary to your understanding, all available evidence confirms it. --Subbie
If evolution is shown to be false, it will be at the hands of things that are true, not made up. --percy
The reason that we have the scientific method is because common sense isn't reliable. -- Taq
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