What is Making the Tissue on my Right Breast Turn Black? (photo)

It appears as though you have a significant problem. Implants that are too large can create pressure necrosis. You should see your surgeon immediately.

I would return to your plastic surgeon ASAP.  It appears as though the implant might need to be removed the skin closed up over a smaller implant.

The skin is clearly necrotic. I agree this is rare. Even in the early pictures the skin seems quite thin. It seems its a mater of time that the implant becomes exposed or infected. You may want to consider smaller implants or possibly fat transfer before re augmentation. 

and you do have a problem.  You must talk to your surgeon to find a solution.  Yes, it may be bizarre but now its his responsibility to help get you through this.  Unless he knows why you developed this problem, its best to remove the implant and debride the tissue and restore your skin integrity.  Consider removing both implants as the size may have had something to do with your tissue loss.  Good luck!

This is necrotic skin and possibly underlying tissue over an implant. I would advise that you see your plastic surgeon immediately.