The Role of Cones in Color Interpretation

We have sensory cells at the back of our eyes called rods and cones. Each kind of cone responds better to a different frequency. And so what your brain is doing is some kind of interpolation. It's like, well, I saw this kind respond really brightly and that kind very dimly. So it must be a lower frequency photon ormust be a higher frequency photon. That color is in your mind. It's not in the photon.