Oh yee of little faith...there absolutely is a way to bring that shiny chrome feeling back!
Alright, may not be all that easy, but way back when, I restored my lenses for the coupe. I had a complete write-up on this site here, including pics...haven't looked for them now though.
Anyways, if my memory serves me right I used one of these "chrome finish" spray can deals. Have to take a bit of care to avoid any sags, but overall things turns out pretty nice. Made for a pretty "nnnoooo...why meeee????" moment when I was re-installing the lenses back in the housing only to hear that 'pop' sound of plastic cracking somewhere. Well, that somewhere was right in the face of the lense, towards one of the ends, so not all that visible...but it's there.
Plan on spending most of your time masking off the lenses or the housing, and these are some pretty tight lines, so you need to pick up the thin masking tape.