Using chemicals & dyes, Terry Hunt Painting & Decorating can create in hours that which takes decades to occur in nature. Copper is the most commonly seen metal with a patina. The copper patina that is most familiar is some variation of verdigris, or blue-green. However, using chemical formulations & various techniques, there are many different colors and effects that can be achieved. Steel, aluminum, bronze and brass can all be successfully patinated to achieve the desired aged decorative effect.