Some great progress, guys - the Ferrari and Riviera are looking fantastic!
What color did you use? That looks pretty darn close from here!
Given what the 1:1 Riviera interiors look like as the wood de-laminates over the years, the chipped white edges are probably the most accurate way to go here.
The closest I found was the one lone hubcap in the Hogan's Heroes Jeep, I think left over from its time as a courtesy car. It's not 100% accurate, but with a decal added to make the vent holes it was close enough for me.
On my own build, I finally got the interior stripped and repainted. Most of what you see here is Tamiya Semi-Gloss Black, with Molotow for the chrome bits and Tamiya Flat Aluminum for the door inserts. The gauge decals were destroyed when I stripped off the old paint, so I made new ones based on a spare set I had from the Revell '59 Corvette kit. Still a few more details to paint but it's getting closer!