Another way to add color and a nice finish to a showpiece is by spraying the piece with a mixture of cocoa butter and chocolate. While the technique is similar to airbrushing, it utilizes a larger spray gun, available at any hardware store. The cocoa butter–chocolate mixture can be made from dark, white, or milk chocolate, and any color cocoa butter can be used. While 40 percent cocoa butter to 60 percent chocolate is the standard ratio, a higher percentage of cocoa butter should be used if the chocolate has a low viscosity. When combined, the mixture should have the same viscosity and appearance as oil.