Just copy one of the color lines and change the name and values. Example <color name="Galvanized Metal" materialName="metalGalvanized" color="0.5 0.5 0.5"/> Each number in the color section is the red green blue values. 0.0 0.0 0.0 is black, 1 1 1 is white 1 0 0 is red. Hope this helps?
