Looks like camera/lighting issues on a satin black car.
the first one has yellow surroundings in the picture.
in the other two, you can both see the incandescent glare on windows and you can see that actual black in the camera flash on the last two on the front bumpers.
but... that being said... you could get roughly the same effect by mixing a super-fine copper dust in with a satin black coat. just make sure you can seal it, most metals that are reds oxidize to weird colors. like that nasty green like the statue of liberty...
IDK though. IMO, those are probably black cars. You never know. Happy hunting if you're looking for that finish.
1999 Camaro Z28
Lid, ORY, Catback, Pacesetter LTs, !EGR, !Cats, !AIR