I think the chrome tape (like a metal tape - but not metal) is a great idea!
Strange coincidence....here's a fellow working on his headlight visor on a Vespa. In order to fit it , he had to cut it and cover the cut with automotive chrome.
Autozone sells a roll of rocker-panel chrome tape....for $11 - enough to do every LIKE in N. America.
4 State Trucks.Com sells it by the foot for a couple a' bucks.I'm thinking I'm going to try some of this automitive chrome tape at the top of my LIKE 200i head light.
One suggestion was to use a bit of window tinting up there - but I found that even thick blue painter's tape causes a distraction to my night viewing of the road.....window tint would not work for me. The chrome tape would not let any light through - and if trimmed neatly may not be an eye-sore on the scoot....looking like a part of the chrome trim ring.