I bought a butt yesterday afternoon, and put some dry rub spices on it, wrapped it tightly in plastic wrap and tucked it into the refrigerator. When I pulled it out this am at 6, the surface of the meat where the spices weren't in contact had turned sort of a green color. To top it off, there is a very strong meat smell. Not necessarily a bad smell, sort of like what you can smell in any raw meat, but stronger. Did I get a bad cut of meat? Or is this normal for a butt? Now I'm paranoid!!