” color perception of ancient Greeks was quite limited compared to that of modern man”
How could we know that? I mean, I don’t even know if you experience the same thing I do when light in the green bandwidth strikes your cone cells and your brain processes the information. You could be experience what I do when I see red, or you could be experiencing something totally outside my ken.
However, it is possible to make certain assumptions as to the width of color band perception because band size can be objectively measured. For example, if a color palette with a wide array of colors is presented to a test group, the number of separate and distinct colors identified by each can be determined and expressed numerically.