Dudes,
Wear what you want. Just look professional. I have interviewed at two majors and hired by both, have never worn a blue suit (used a dark char-coal suit), wore what ever conservative tie I wanted (not some crazy wierd thing). One shirt was light grey the other was white with red but conservative pin stripes. I even wore wing tip shoes once which is suppossed to be BAAAAAD. Again worked for me. The interviewers want a professional looking person. Then again I like to be a little different. Good luck fellas.
Rosie