I've got some 'foil paper' to try. Actually, that's a big misnomer as it's not paper at all. It's a plastic or celophane foil. I first came across it for use in manicures instead of nail polish, but the last time I was in the craft store waiting for Nana to buy her wool and assorted crafty bits I noticed a display of the same stuff in large sheets.

The part to be coated in metal is coated in a contact adhesive. When that is dry a piece of foil paper is laid over it and rubbed down. The foil will stick to the adhesive and the carrier sheet can be removed. I've not spent much time experimenting with it yet other than to touch up a couple of spots where the chrome had missed on a Jag tail light.
The bad news is that I just found out that Jones Tones is no longer making it. But there is bound to be another source. I wonder if plastic foil wrapping paper would work.