after spending the last three days reading hundreds of SPS articles, websites, reviews, etc. I strongly believe that i have found a simple but effective way of colouring up SPS. based on my understanding of corals and optical reflex principal, i dont see any reason why this wont work. And the best part is that you can even choose the colour that your want your SPS to have. So guys, here you goes. If you want a quick colour change in your SPS, just go get a pair of coloured sungla