with respect to human color categories, steels & belpaeme's (s&b's) simulations over-emphasize the possible influence of language. in humans, color processing is the result of a long evolutionary process in which categories developed without language. common principles of color processing lead to similar color categories, but interindividual variation in color categories exists. even color-deficiencies, causing large differences in color categories, remain inconspicuous in everyday life, thereby contradicting the hypothesis that language could play a role in color category formation.