My wife's car has perforated black leather seats. Yesterday a friend was eating chocolate in the car and after I dropped him at home, I noticed that some chocolate had been compressed under his leg and melted into the perforations of the seat. Try as I might I have yet to be able to completely clean it away. Any suggestions? I'm especially concerned because my MX with white seats is arriving in 10 days. If this had happened with white seats and they aren't fully cleanable it would be a disaster!!!