I am looking to do some experimenting with some diy live rock. I am looking for a way to make unique colors and designs so that I don't have the standard portland cement white. I've seen people use polyblend and krylon fusion to color their rocks but what I'm really wanting to know is what chemicals in certain paints will harm the coral/fish that I should avoid. Essentially I'm looking to use a wide variety of paints and if I have the material safety data sheets of the paints, what should I be avoiding and searching for? Thanks all!