First time. Took me a minute to figure out what I was doing, and had Hell's Kitchen playing in the background. I figure after you do it once, it's not as legitimate since you start to recognize the patterns.
Your Score: 615
Average reaction time:
I'm not sure what the rest of my numbers mean. I think I spotted the black ones better since it was easier to see the silver guns in black hands.
This game reminds me of being in the Marine Corps, trying to see someone's rank and name tag as they approached, and registering the information and determining whether I had to salute or not lol.