there are four colors of these chips (???, blue, green, black). I have question marks because I remember it being yellow but the chipguide shows a lavender one --- there may be five, maybe not. They are used for different purposes and they won't switch between the colors. The blue are the American Casino guide coupon. The book itself is like $11-12 and lets you get the chip with the coupon if you are a new club member. They do have a blue ncv-5 but have been unable to get that one. I do have the black one as well and they will give you the 5x black ncv-5 for the 1x ncv-25. That's a different promotion to get the black ones.