Eye color Light and light-mixed eyes (16–12 in Martin scale) Pure light (16–15 in Martin scale) Light-mixed (14–12 in Martin scale) Mixed eyes (11–7 in Martin scale) Mixture of light eyes (blue, gray or green) with brown when light and brown appearance is at the same level. Dark and dark-mixed eyes (6–1 in Martin scale) Amber eyes are of a solid color and have a strong yellowish/golden and russet/coppery tint. This may be due to the deposition of the yellow pigment called lipochrome in the iris (which is also found in green eyes). Amber eyes should not be confused with hazel eyes;
Neoteny in humans and the Red Queen hypothesis. Because men generally exhibit uniform preference for neotenous women's faces, Elia (2013) questioned if women's varying preferences for neotenous men's faces could "help determine" the range of facial neoteny in humans. Trying to rescue Louis Bolk's theory, Stephen Jay Gould objected to the ranking of races as more or less neotenous, but Gould argued that if one used the terms set forth by 1920s proponents of racial neoteny, "Asians" are "clearly" the most neotenized human "race". Ashley Montagu said that the "Mongoloid skull generally, whether Chinese or Japanese, has been rather more neotenized than the