Copper Vein Reo Polishing an ecig mod question to fellow vapers

When I first got the Copper Vein Reo the whole thing was shinny. Click here to see a lytro pics of it. The inside is still shinny but the outside is not :( I used an electric tooth brush and tooth paste on the mod for over a hour. It barely effected it. Any suggestions on how to polish the Copper Vien Reo so it shines again?
Click here to see a pic of the LP SL Reo Grand.