Hmm, I am actually wondering the same thing as you guys do. I managed to find a overlay from Bimmian (
http://www.bimmian.com/25/HRO/), however, I would say that black vinyl film covered outside of the headlamp will not look that nice at all.
Just another thought.. Wondering if we can open the headlight cover and change the orange reflector to silver in the future as more accessories come out. Looks like the orange reflectors are just pieces of plastic clipped on the headlight.