issac, do you just mean like a spray bottle? I tried it once with coloring paste thinned with a lot of alcohol and put it into a very fine mister instead of using an air brush. It didn't come out even at all. I had rolled out gumpaste and cut flower shapes that I was going to stagger on the sides of a tiered cake. I needed them to be a very bright aqua and handpainting was getting to be tedious. Anyhow, they were pretty small so I thought the mister would get an even coat, or at least an even two or three coats, but it was pretty pointless. Being that alcohol is much thinner than melted chocolate and cocoa butter, I'm guessing it wouldn't work...?