When I go to the hospital to examine a newborn as a pediatrician, one of the first questions parents ask-- after I reassure them that their infant is normal, after we've talked about feeding-- is what color is my child's eyes?
Sometimes it's difficult to tell a baby's eyes because the eyelids are a little bit swollen. But when we can see them and they are dark, I can tell them that they are going to stay dark. If they are light in color or blue or green, they may stay blue or green as time progresses. Some of them will darken by six months of age.
You have to wait until six or eight months of age with light colored eyes to be able to tell whether they will darken. When I'm talking about eye color to the family in the hospital about their newborn, I often use that opportunity to talk to them about the importance of gaze. In other words, the direct contact between the mother's face and the baby's eyes and how important that is to the attachment process that they are now involved with.