Man, that looks fricking tasty. I ran into a funny situation when I vac packed 40 lbs that I smoked. When sliced, I had a nice beautiful color (as does yours), but later when I removed the meat from the vac seal bags, all the color was gone. I was seriously bummed out about it. Taste and texture was there, but the color was all gone. Anyways, I had opened up a 1 lb pack and there was some left, so I threw it in a ziplock and put it in the fridge. Took it out 2 days later to make another sammie and BAM, the color had returned !!..
Still don't quite understand it, but I make allowances for it when serving to others.