It is a heavy gel, perfect for flat waters on colored surfaces, and is particularly suitable for creating streams, riverbeds, and waterfalls. For the latter, transparent water is poured onto a smooth surface. Once it dries, you can peel it off and cut it into shape. Water types are available in transparent, Mediterranean blue, Pacific blue, and Atlantic blue. The material is colored with lightfast pigments. You can create your own shades by mixing in a Model Air color of your choice. Please also note that the surface you are working on will influence the coloration.