Jasson,
Only have a vague recollection but I do not recall viewing any boa photo that I would have considered as unusual. If I had, I would have paid particular attention to it since I wish to record
the variation that occurs in the species.

The vast majority of neonates have dark grayish/black eyes at birth. Within about a year, sometimes longer, they eventually lighten up. The eye color varies greatly withing he species ranging from yellow, to bronze, greenish, gray, to black with gradations and flecking with combinations of different colors.

Richard F. Hoyer