Hi,
A print screen is better

The black areas are not normal. It is as if there was no texture (no reflection, nothing). I tried with the different colors of skin but nothing changes. I have it only with the skin Akira on the Armitage.
My config:
Intel Core I7 3930K
Asus DirectCU II HD7970 Eyefinity
32gb DDR3
SSD Crucial M4