I'm about to redo my PB in original Giallo Fly with a full strip down and disassembly, original paint is tired and lightly spider cracked. If done right, in my opinion there is little to match it, though I admit to being very partial to silver as I was lucky to grow up with a 72 GTS that my father ordered and picked up original at the factory without black hoods.
Glasurit has a phenomenal vintage colors choice if you want to use original paint schemes.
https://www.glasurit.com/en-in...nts-for-classic-cars
PPG would be the other.
https://corporate.ppg.com/Colo...ve-OEM-Coatings.aspx
House of colors makes choice near impossible for sure as just about all palettes are super inviting!
Cheers and best of luck, it's a gorgeous car.