Mixing paint is not as complicated as it seems. We chose Du Pont Nason paint, which is a good-quality, economical paint. A gallon of Nason, catalyst, and reducer may cost just around $150. Using the paint requires a 6:1:1 mix (six parts paint, one part catalyst, one part reducer). These foolproof mixing cups are a cinch to use. Choose any point on the cup, such as line 5, and fill to that point with paint. Fill to the second 5 line with catalyst, and the third 5 line with reducer. Don’t mix more paint than you can use, we recommend mixing a cup at a time.