TwitArt.com  has designed the Twitter background for a mortgage lending company headquartered in what building?
TwitArt.com:  TwitArt.com designs backgrounds for both personal and business use and has designed the Twitter background for Quicken Loans. Quicken Loans: Quicken Loans Inc., is a mortgage lending company headquartered in the One Campus Martius building in the heart of the financial district of downtown Detroit, Michigan.
i don't know