Foxy- I think we are going to do plain (I think). I believe we can stain it down the line if we want... Our PB discouraged us from doing Kool deck because it chips and has to be redone down the road. He said the salt deck doesn't get "too hot", whatever that means.
We have rock salt finished concrete with a color hardener. The color is sand. It is definitely a lot cooler than the flagstone coping, flagstone paths and other rocks we have around our pool. It has held up well and no maintenance.