The bodies have color on them; all decanted Tamiya sprays. From left to right, TS-47 Chrome Yellow, TS-44 Brilliant Blue and AS-8 Navy Blue.
The Sunoco body will get a different shade of blue for the final coat; the Navy Blue is just to cover the white plastic. I swapped the rear bumpers between the Hot Wheels car and the Sunoco since the latter is molded in white and it needs to be painted white for the former.

This is the Sunoco body now… TS-72 Clear Blue.