So many brown eyes!

The only time I've noticed brown eyes seeming to be dominant is with Goth children. I've had two separate gameplays where I've had active sims have children with Goths, and the children almost always inherit those dark brown Goth eyes, however, I happen to love the dark brown eyes, so it doesn't bother me, just something that I think happens too often to be coincidental. In the one game I had a brother and sister who had a child / children with Cassandra and Alexander respectively, and all of the children inherited the dark brown eyes (the girl had three children with Alexander and the boy had one child with Cassandra). Then in my other game I had a blue-eyed sim have an affair with Mortimer, and they have three children, two of which inherited the dark brown eyes, and one who actually got blue. So that's 6/7 Goth offspring who inherited the dark eyes (who all had a parent with a different eye color). That seems more than coincidental, I wouldn't be surprised since the Goths are such an iconic family in the franchise if the devs didn't program in some kind of hidden dominance factor in their genetics, lol.