From my personal experience working here and speaking with some interviewers, I would say all you need to worry about is looking nice and professional. I didn't wear a Red tie, it was gold I think, with some pattern, but it looked nice. One interviewer mentioned a guy who didn't bring a jacket at all, that was not a plus in his "pro" column. Play the game a little bit by wearing a typical suit, but if you think the tie is the show stopper, you are probably busting the interview for being too uptight already. Good luck, be yourself, prepare, and have fun.