Patina is designed for use on copper, brass, bronze, and our metal alloy metallic coatings. Patina reactions produce all of the various shades of blue & blue/greens that are so familiar with aged copper, brass, and bronze. This solution can be applied directly onto metal alloys, or onto the final, tacky coat of one of our metallic coatings. On metal alloys, Patina will react to form shades of purple, blue, and turquoise blue/green. When applied to one of our metallic coatings, the colors are determined by the coating being used, though they tend toward a variety of blues and greens. Regardless of the medium being used, colors may be altered with water mists or by subjecting the parts to high humidity for various periods of time.