Deda Elementi makes a Ivory bar tapa that should match the Shogun head tube color. The only thing I dislike about Deda tapes is that they are thin and hard unlike other cork tape. Oh, they've adhesive back which I hate. If you are going to use the Shogun as your commute/rain bike, then I would suggest a darker color tape.

I think I should be able to get that cassette loosen for you. You can scrub the bejesus out of the cogs then. They were probably black when new.