1968 Simulated Dodge Mag Wheel cover color code need

[Cliff Ramsdell]

Hi all,
Getting a set of the simulated mag wheel covers set for my GTS sorted out and I want to repaint them. Some are the black 69/70 W18 covers and a couple are the 68 gray covers.

Does anyone know the color for the covers?

Thanks,
Cliff Ramsdell