I just airbrushed the Veil on my headlights (2009 BMW M3). I think it looks pretty good, a subtle smoke tint. Came on nice and even and used only a tiny amount of paint. Up very close it does look a somewhat speckled like dust or dirt but I didn't want a really heavy coat to change the light output or darken the look that much.
Honestly I'm not sure if its dark enough for laser protection but according to the site the finish can be anywhere from barely noticeable to very dark and still work.
I chose not to sand the lights as I wasn't convinced I'd keep the Veil and I didn't want to mar the factory lights. I wiped them with household ammonia followed by rubbing alcohol and let it dry. The Veil was used straight out of the can, and the whole application took a tiny amount of paint (definitely quite a bit less than 10% of the whole can).
I used a cheap airbrush from eBay (~$20) but the included can of compressed air made for a difficult application (this is my first time with any airbrush). As air comes out, the can gets cold (I knew this), but with the can cold, air pressure drops and no paint comes out. I tried warming the can in warm water but this caused it to sputter out liquid propellant until the temp equalized, then it quickly turned cold. Eventually I got the hang of just warming the bottom intermittently, but in the end, the can ran out of air. By this time, only a very faint, nearly invisible layer of Veil was on the lights.
I ended up buying a small air compressor at Michaels ($300 - 50% off coupon=$150 -- if you google for coupons they are readily available, or sign up at the Michaels webpage and they send you a coupon for 50% off any item). It made all the difference: paint went on smoothly, easily seen and very even. I did several (?6, not sure) very light layers and there is a definitely visible tint to the lights now.
I think I'll keep it for future applications given how easy it was to use. I figured the cans of compressed air sell for around $20 each and mine ran out on the first application - plus it made a very piddly spray and didn't go on as even as I'd like. With the compressor it felt like a real tool, and the job was done in less than 15 minutes.
This completes my speed countermeasures (Veil, Laser Interceptor, matte black kidney grills, V1, Cheetah GPS redlight alert + Cheetah wireless radar interface). I chose not to cover my license plate or Veil it directly as I'd like to avoid a plate alteration/interference ticket.
I've attached a few pictures, with closeups of the headlights at a macro setting so you can see the texturing better. I think the tint is visible but subtle if somewhat speckled on very close inspection.
Comments/feedback? Do you think it will be enough? Should I make it a darker/thicker application?