George said:
T.R. Knight's hair is blue
And I will second that. Yes, it is blue. I saw him on our local NY1 pre-show. It's blue and it's really unattractive on him.
Technically the title of the song is Show Off, not I Don't Wanna Show Off and it does not play as well on the small screen as it does in the theatre. In the Marquis Theatre, even in the mezzanine it's a great number but on television it just sat there.