If I turn my anti aliasing up to "Standard 4x" I get a blue edge on the screen when blacking out, also on the sign in screen. Maybe a pixel wide. Doesn't effect game play or fps, still runs smooth at 60fps. Also moved mode to "adaptive multisample AA", after moving to the "Standard 4X", and the blue edge didn't change....Thx. My vid card info below.
AMD Radeon HD 7570 ,
1 gig GDDR5
Core Clock in MHz 650 MHz
Memory Clock in MHz 800 MHz