I don't know why they hate fun so much. For people who claim to love freedom and individuality they sure hate people expressing themselves in non-conforming ways.
I know they claim its because it's "unnatural" but you don't see them complaining about brunettes bleaching their hair to be blonde. Come to think of it, they don't have a problem with women using plastic surgery to have unnaturally large boobs either (unless they happen to be trans)
Hmmmmm :thinking-about-it:
It's not the particular colors or the act of dying they hate. It's just cultural signifiers that put some people in one group or another. They hate men in high heels except cowboy boots that often have a high heel. It's what just happens to be associated culturally with groups.