LAST EDITED ON 09-30-12 AT 06:58 PM (EST)
Get a set of red long handles (long underwear) and a white knit cap, make a paper sign in the shape of a Heinz bottle label, and go as a bottle of catsup.
If long underwear wouldn't be considered apropos for your work place, wear a pair of red shorts (or pants) with it.
Red face paint could top it off.
You would need a long overcoat for the trip to/from work.