Actual chrome plating requires metal, I believe, as electricity is involved. Would have to be something fake but chrome like.
Chrome paint doesn't look like chrome, it looks like silver paint. So that's probably not going to fly. However...
I hear a lot of interesting stuff about "Spectrachrome". Might be something to look into. Very very chrome like but goes on like paint, well it's a multi-stage process but still. Maybe can find someone in the vicinity who does it.