I don’t mean discerning ever finer gradations in existing colors, but entirely new color qualia.
Finer gradations are boring, but there are (1) infrared and ultraviolet colors, and (2) colors that our current system of three types of cone cells perceives as the same, but could be perceived as different by having more types of cones, or even different types of cones. We could use the new qualia for these.
Finer gradations are boring, but there are (1) infrared and ultraviolet colors, and (2) colors that our current system of three types of cone cells perceives as the same, but could be perceived as different by having more types of cones, or even different types of cones. We could use the new qualia for these.