Always wear a suit (including the jacket!).
When I recruited, personally someone copying our company colours didn't do it for me - I preferred someone who was a bit more original and siaplayed their real personality.
Don't justthink about the tie - look for a good combination of shirt colour/tie too - way too many people wear white shirts, blue, green and red shirts can all look fantastic, with the right tie too!
Make sure your shoes are polished, remove any and all piercings (ears included), wear only your watch and wedding ring (if applicable), be cleanly shaven, wear a touch of after shave etc.
Recruiters just want to see that you can brush up to what you'll need to be on-board AND that you can show a bit of personality in doing so.