The patination of bronze (sculpture) is the intentional change in colour of the bronze metal surface, achieved by chemically oxidizing the copper within the Everadur bronze alloy… through the application of high heat in combination with concentrated acids. Depending on the degree of heat, which chemicals, and their degree of concentration, bronzes can be patinated in a wide variety of colours, and values ranging from browns and black, to greens, yellows, deep blues, and reds. Additionally, complexity in colour and texture can be achieved through layering. Application is by brush stippling, spraying, burying, and/or immersion. In addition, contemporary patineurs often blend small amounts of pigments to enhance and emphasize colour.