I've never seen this kind of colour on a Superfast.
Looks like chrome green yellow gold metallic, I can't describe it better. Unfortunately I don't have a comparison model in my hand at the moment.
I have in my collection two others with the red interior with different green metallic.

- 55D_Ford Cortina Mk IV_chrome green met_cream int_clear windows_dd wheels_unpainted base Lesney_H_no Box1.jpg (229.43 KiB) Viewed 6896 times
SF