I have a 28 year old pool with a lot of cool decking around it. The cool decking is in really good shape, it's just ugly. It's kind of a pinkish or salmon color that has faded. We would like to stain it a darker color, or at the very least clean it really good. Can cool deck be stained and if it can what is the process? Second, if it can't be stained darker, can I acid wash it or something else to try and bring it back to life? Thanks for any input.