Project black hole sun.

[Blackzed]

On my C5 Z06, they were put into the side gills, so you couldn't see them from the side. Also a bit of tint applied and they almost disappeared.

 

[Dorsetsteve]

I did consider popping them into the gill but thought it gave better visibility to other road users being surface mounted, I even toyed with them being on top the gill for the same reason as per the U.K./European spec. Settled on the halfway point and went in the rebate.