Funny, i actually typed 'mercury' but wasn't sure if that was what work called it or not so i removed it. venaci have 'burning black' finish, it looks like just darker brushed alluminum. Bullitt5897 used to have them in the venaci mesh
Nissan 370Z Forum - bullitt5897's Album: Photoshoots - Picture
this should be close to what yours will look like,