Had a customer that wanted to do a 4 Color Urban GAP Camo. I've never done a 4 Color urban anything, so I had to come up with a 4th color on my dark urban camo's. Problem was, nothing that I tried worked right, so I had to use a selection of new colors. Looking at various "urban camo" styles on the interweb, I found most had Black, White, a blueish grey, and a dark grey. So I had to find the right mix for the blueish grey, and I used a slightly darkened sniper grey as the majority and it think the colors look great.