If you look at most of the characters you'll see that they have unnatural colored hair. I mean one dude had GREEN hair. "Could've been dyed". Yeah, but it never been implied. Yuri, the guy with red hair and green eyes. The guy who has the color scheme of a watermelon has been like this since a child.
I think u've not understanding my comment. My english is very bad for sure, too. Sorry about my english... I dislike very much translators, so I never use it and just try to improve my english by myself.
What i want to say is: A korean boy or girl just can have red hair and green eyes in a manga or anime...MV because they cant naturally. Is almost impossible for a japanese, korean or taiwanese etc... to have light eyes or colored hair. Almost all of them use cosmetics to light the skin. Genetic, u understand me?
Liqian people of China, they are unique and they can have blond hair and blue eyes. Liqians are the exception.
Im not trying to start a fight, Anon-Chan. ^.^

If you are ugly, just go to a surgeon like almost all koreans idols do. That popular guy s not natural at all. A korean boy with that color of hair and eyes? hehehe, just in a japanese inspired art.