We smoked a 7lb butt last night, finally got done around 5am, got to pulling @ 9. There were 2 spots where the meat was an odd shade of brown/grey. I've seen this one other time in a rack of ribs we smoked, but then it ws foul smelling and we tossed that section of the rack, and everything else was fine. I'm going to try again to get pictures up, if anyone recognizes this, or knows what it is, help me out! I kept the 'dark meat' in a separate container this time because it doesn't smell at all, and I tasted a lil piece about 10 minutes ago and I still feel fine.....