I think you will find that schools who have a camouflage belt usually have belt colors in stead of tips between other belt colors.
Well you know, that's a good point. I think all ATA schools use a camouflage belt, and I believe their colors go: White, Orange, Yellow, Camouflage, Green, Purple, Blue, Brown, Red, Black -- no striped or tipped belts in their spectrum. I've wondered before if maybe the camouflage belt is included in ATA-style in part because Lee Haeng Ung let his military background influence the aesthetics of his style, but maybe it was just because he needed another color and everything in ROYGBIV was already taken. It was either go with camouflage or pink!