How could my 5-month old nephew have blue eyes while the rest of the family has

Question:

How could my 5-month old nephew have blue eyes while the rest of the family has dark brown eyes?

I am baffled, and hope there is a genetics guru here to help. My 5-month old newphew has stunning bright blue eyes, yet neither his mother, father, either grandfather, and either grandmother have blue eyes. My mom and dad both have dark brown eyes, and his paternal grandparents also have almost reddish brown eyes. Is is true that babies can be born with blue eyes and then the eye pigment changes colors?
Thanks to anyone who can explain this to me. I have studied canine genetics yet I cannot draw a conclusion for this beautiful baby humans eyes.

Best Answer - Chosen by Asker: It might be that your family had blue eyes way before. You should do a family background check. Genetics can be complicated (believe me, I took a course). There are dominant and recessive genes, on where the Dominant is the physical feature. So lets take capital B for brown eyes, and lowercase b for blue eyes. Since your nephew has blue eyes, his parents must of inherited the recessive blue eye gene from their parents. The possible alleles for the parents are (mom) Bb and (dad) Bb. Since the capital B is dominant and its brown, the parents came out with Brown eyes. But if you look, they also have a lowercase b for blue eyes which they must have inherited. So that means that their families had blue eyes at a point. An offspring inherits one allele from each parent. So your nephew inherited the two lower case b's for blue eyes. Therefore coming out with blue eyes. But the chances of that happening is 25% out of 100. So your nephew is pretty lucky. This is the same with my family. My dad's family all have brown eyes, but my mom has green or gray. I ended up with brown eyes...sadly....but its all genetics. It might seem alittle confusing, but its simple if you understand the terms