Hi I do work for the boat builders in New England one of them build off shore racers and they paint with HOK and Dupont. They told me you should spray the color coats as is. Then spray the clear coat,that way you get the best finish possible. In fact there was write up in Power Boat Mag. about them , after they finish painting for the day I get to have any left over paint I need. Now thats a good deal -because some of those colors cost hundreds of dollars a can depending on color. One note they said is that when mixed the paint will last a few hours or at the most one to two days depending on color. For $120 that a real good deal go for it. BUT make sure a good filter mask made for that paint.