How far do you want to take it, I had mine re-galvanized and then found the proper rivets to keep the original look. I'm really happy with it, but it's obviously a big job depending on your setup.
I also found a good spray paint that some-what emulated the look, I used that for the metal around the roof which I didn't want to remove. I'd have to find a can to remember the name, but I believe it was Hammerite in a galvanized steel color.
Hope that helps.