Colouring your hair isn't that hard. Hair colour should never be a problem for anybody. Hell, even balding won't be a problem for long, there's insanely expensive procedures to correct that and it'll only come down with time. I bet that when we're all old, people will look at us the way we look at people before braces, saying "Man, people were way uglier than they are now!" In a few decades, the concept of being bald and staying that way will probably seem weird.