FWIW, back in '73 I ordered/bought a '73 Z28 in code 97 orange metallic; gorgeous, bright color, and the metallic had a gold pearlish effect where sunlight hit body contours.
That said, most every time I've seen a car repainted that color, they look murkier and sometimes almost brownish, so I guess the formulas differ from different paint manufacturers.
The places that make/sell hot rod & custom colors likely have an orange metallic that'll look great.