My wife's aunt has blue/green eyes and her husband has pale blue eyes. Their son has blue eyes but their daughter has very dark brown (almost black) eyes. They whole family says that there is no way the girl has a different father, but I'm not sure I believe it. Everything I have ever learned about genetics tells me that there is no way two blue-eyed or green-eyed parents can have a brown-eyed child. Blue and green are recessive, with brown being dominant over both. Now, it will work the other way around, but you can't go from recessive to dominant with eye color (as far as I know).
Is something like this even possible? Is there something I don't know? Right now I'm trying to figure out how:
Parent 1: bb
Parent 2: bb
Could result in: