Saunders and van Brakel question whether the special status
of red, green, yellow, and blue in our perceptual organization is
anything more than a shadow cast by the English language. I suggest
that it is more than this. We can hardly imagine treating lime,
purple, orange, and teal as unique hues, and the reason does not
lie in special training. To settle the issue, I suggest some lines for
psychological experiment and anthropological investigation.