I have a Blue and a Green " Stop at the Thunderbird " stop sign and have seen a black one. There may be other colors but I am not aware of them. The way your matchbook is burned looks like someone was using it as a time delay by putting a match sticking out from the phosphorus area then lighting the match and a few seconds later it burns down to the matchbook lighting all the match heads. As kids we did that very thing except we would put a firecracker with the fuse in the matchbook. This would give us usually about 10 to 15 seconds head start after lighting the match before firecracker would explode.