Lens Blackout Spray?

I was thumbing through my latest issue of the Summit Racing catalog. I came across this spray. Supposedly, when applied, it blacks out your lenses. But, when you turn your lights on, the natural color appears. Anyone have any experience with this stuff?

Judging from the lack of responses, I've decided not to gamble my $10 away. I'll stick with attempting to clear them (instead of smoke them). Besides, smoking plastic lenses probably causes cancer quicker than regular lenses...

It doesn't work. Looks good the first day then it cracks off.

Either way I don't think you'll find any, The US govt has banned it into North America. No Aerosol cans can enter the country, I ordered some from a supplier over seas for some customers and I never got it...It's still at the border today :_(