Love working on this grey paper. Paint colors are true. Paper is smooth, thin and strong. I actually use it inside my wet pallette. I set up the wet pallette the way you are supposed to…. with the sponge and the paper film. And I just throw a sheet of grey matters on top. Works great for me. Sometimes I sprits with water…. very fine mist. I found the boxes on Amazon (BTSKY CLEAR PLASTIC STACKABLE BOXES WITH LIDS). They are the perfect size and shallow as well. I was hoping they would work out and they did famously. You don’t have to stack them if you don’t want to. Sponges and paper film are by Masterson. This set up is great for me. And I highly recommend the Grey Matters paper to throw on top. The paint doesn’t get soggy and lasts for a while. When you are done with it… throw the grey paper away…..and just replace it.