I highly doubt anyone will offer/sell a pre-cut Model 3 specific kit in the exact color/finish you mentioned above. So, if you’re dead set on having a “green brushed metal” color/finish, then you will probably have only 2 possible options:
1) Buy a roll the vinyl yourself (they are offered in 100’s of different colors/finishes) and do the cutting/installing yourself, or
2) Have it professionally installed. Go to a detail shop (wrap specialist) and ask if they have the vinyl color you want. If they do not, then it will likely be a very expensive proposition for you because the detail shop will need to place a special order in your specific color. These shops normally buy their vinyl in large rolls/bulk. So, they will likely pass most if not all of that special material cost to you.
Good luck, man…