That's the same as this:
http://www.flyeyeskit.co.uk/
I have it on my rear indicators and it looks ok. It's been fitted for a couple of years now, I always forget it's on there but I'd never had an issue with it. When you buy from them they give you a booklet for if you get pulled over, it has all the laws and reasons why it doesn't break them listed. I wouldn't use it on a large light surface though, might look a bit naff
Yea they were doing it on a civic type r at jae other year and it looked cack just made the headlights look dirty