> Additionally there is no such thing as pure green, because all radiation that green feeds on will also feed either red or blue as well. You can exploit cone

> Additionally there is no such thing as pure green, because all radiation that green feeds on will also feed either red or blue as well. You can exploit cone fatigue to experience a greener green: make the red and blue people play tug of war by themselves with high intensity, then if you immediately call in green's fresh strength, red and blue will be easily overpowered. (Slight model inaccuracy: the cells themselves aren't the colors, they're just cells with low-, medium-, and high- frequency sensitivity. Interestingly, the color experience you get from activating just one type of cell is different from the one you get from monochromatic light at their respective spectral peaks. I find deep (long-wavelength) red, for example, to be rather different.)