When my house was built (about three years ago), the builders neglected to paint the gas pipe on my side of my meter and that pipe has now developed a nice coat of surface rust (it's normal black gas pipe). The pipe on the gas company's side of the meter was painted and looks the same as when I moved in.
(1) Is the rust/rusty color a problem and something I should correct? The rest of the houses on my street (built during the past 1-5 years) are in a similar situation.
(2) I assume that I should paint over the rusty-looking pipe so it doesn't corode or develop into a problem. What is the appropiate paint to use here?
Thanks.