1967 dark copper metallic paint and copper interior

I am building the stroker Sb now for my 67 barracuda (originally 273 hi-po Formula S) and I am going to paint under the hood. Somebody in the 80s had painted the car orange and painted that under the hood, but painted the firewall Chevy black.

Car is originally the 1967 only dark copper metallic (its brown) with the lighter copper interior. I don’t necessarily love the color, but I have never seen another car with that color combination. Has anyone else? Do you have pics? How rare is that combo?