example 12 gauge green 16 gauge blue 20 gauge red 10 gauge black 8 gauge yellow and 410 gauge purple with this in mind the hunter will be able at first sight to choose the correct shot shell for the weapon that he or she is carrying and not mistake the size anodizing is intended in this invention to provide a permanent color to the steel shot those colored shots on the market today that are coated with enamels or other like materials used to color them are susceptible to flaking and deterioration such that over a period of time the color disappears from the shot anodizing is an electrolytic passivation process used to increase the thickness of the natural oxide layer on the surface of metal parts the process is called u201c anodizing u201d because the part to be treated forms the anode electrode of an electrical circuit anodizing increases corrosion resistance and wear resistance and generally provides better adhesion for paint primers and glues than does the bare metal thus anodizing as a means of coloring shot also means that the shot is made more corrosion resistant in addition it has been found by the inventor herein that even though anodization changes the microscopic texture of the surface of the shot and also changes the crystal structure of the metal near the surface this means of coloring shot does not.