Texturing metal gives it a lot of character and interest. Adding variations to the color of metal does as well. I have always had an interest in the coloring and patination of metal and hope to take a class in it when I can. The copper ovals at the bottom of these earrings were made by cutting them out of copper sheet, texturing them with a ball peen hammer, and then using heat to achieve the color change. Copper can change a wide variety of colors when heated; it can even head into blue tones a little bit. Heat-treated copper is not stable so I use a sealant to preserve it.