The
color of the iris gives the human eye its color. The amount of dark pigment, melanin,
in the iris is what determines its color. In newborns the pigment is
concentrated in the folds of the iris. When a baby is a few months old, the
melanin moves to the surface of the iris and gives the baby his or her
permanent eye color. (The Handy Science Answer Book, compiled by the Science
and Technology department of the Carnegie Library of Pittsburgh)
