User blog comment:Maki Kuronami/Lesson 24: Why the Naming Rule of Remnant Exists/@comment-24891101-20140926013726/@comment-10380701-20140926014927

Well, y'know. It's really hard to imagine Ozpin as being 80+ years old, as he barely has a wrinkled on his face. So the alternative I have in mind is that the color trend started at the aftermath of the war, not sometime in the war. Which means that people around 50+ years old are likely exempted from the naming rule.