Okay so I have a Double T Barrel Saddle and just got it this past Year. Probably April of 2012. I have takin very good care of it. It is in my tack room on the saddle rack with a saddle cover on it and when it gets mud on it I always clean it off before putting it up and I was cleaning it and seen the top is turning a greenish blue color. I don't know whats going on with it!! Do you have an idea? Thanks!!