Anodizing is an electrochemical process by which the surface layer of aluminum is changed to aluminum oxide (an extremely tough and scratch-resistant material). At the completion of the anodizing process a dye can be applied to the material to permanantly color the aluminum, and then a sealant closes the pores of the oxide layer. Alternatively, no die can be applied, allowing the existing metallic color to show through, while still having the protective oxide layer.
Performance Armour offers anodizing services for all of our pieces of aluminum armour, including aluminum shields. (and yes, it is possible to anodize your device into the surface of an aluminum shield blank!)
Anodizing will be price-quoted on a case-by-case basis depending on the size of the piece to be anodized, and the complexity of the desired design.
Available base-colors for anodizing are shown below, and individual dyes can be mixed to effectively form a nearly endless array of colors, and time in the dye determines the intensity of the color. (please note that different monitors display colors differently, so the precise hue of the finished piece could vary slightly, and will likely look more "metallic", than the display colors shown below.)