care for stainless downpipes

[Fuzzy]

Pretty sure I know the answer to this, BUT

Mine have gone slightly golden (which is to do with high temperatures affecting the compounds in the metal correct?) and I assume that no amount of scrubbing / polishing is going to make them return to silver is it?

I had to sand down my downpipes not long ago due to a plastic bag melting onto it and I found that it went back to silver although that only lasted for about 2 rides.