Guy that is currently at gamescom reports that the PS Edition has gradient from dark grey to black as you can see in the image below that was taken there. I am personally not happy about that if the color difference is indeed that visible!
Oh... Damn. That doesn't look great to me. I was hyped for just plain black with the subtle Scorpio nod. That 2 tone look is going to look pretty crappy pretty quick as it ages.