I remember a couple years ago Coke came out with Share a Coke and put peoples names on a label on the bottles. So I thought why not just engrave your name on a can . Well I tried and I can't do it with any decent results. I thought the cans were anodized Aluminum but I guess not. I tried many different speeds and power settings, I even tried that tape that was suppose to leave a black mark. All I ended up doing was burning a hole in the can LOL yep It did. So does anyone know how these cans are colored if its not anodized?