9. Peter had Brown Eyes
Hair wasn’t the only physical attribute demonstrating that the kids weren’t actually related. Christopher Knight, Peter, was the only brown-eyed Brady. Back then, color contacts were not easy to obtain, so they kept him brown-eyed. Audiences could hardly tell, and if they could, it was easy enough to explain with genetics. Plenty of kids grew up in homes where they have differently-colored eyes than the rest of their family. At least Peter’s eyes were shaped like Mr. Dittmeyer’s.