Tired of the blue two inch Styrofoam that was the base for a wharf area on my Gn15 layout,
I took my cheap Walmart can of flat flack spray paint, and covered the blue with two coats.
The next day I was surprised to find a very nice water effect.
I was going to finish with a coat of semi gloss Modge-Podge, but I never got to finish the layout.