Dye stains on leather?

Anyone have any ideas how to get stains off the leather? It seems the one black belt I wear to work must be rubbing off some of hte dye onto the seats. The normal leather cleaning/coditioning wipes I use won't do anything. Any suggestions besides not wearing the belt anymore?

we have a product called xtra duty we use at the shop. It takes out almost anything, I've gotten stained cloth seats looking new, and it works well on leather too. Not sure where you can get it from. just do a search or two for "Car Brite Xtray Duty" should be able to find it somewhere.