Probably the most commonly used ways of coloring concrete are those achieved after the concrete has completely hardened. These applied color techniques included paints, stains, plaster and stucco. Many types of paint, varying as to their base material, are on the market. The newest and perhaps most promising coatings are those using epoxy resins. They offer a durability which has surpised all who have used them. They offer high resistance to water infiltration and attack of acids and they also retard the growth of molds. Application practices dicate that a discussion of paints be split into two parts: (1) portlan cement base paints and (2) other types of paints. Cement paints are noted for the durability in both exterior and interior applications. The concrete or