My friend who does some paint work suggests you be sure they use a "paint chromagraph", and that any good paint shop would do this. It analyses the colors in your paint, then they can take the paint they mix up, paint something and let it dry, and then compare that to the car.

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1991 350SDL. 230,000 miles (new motor @ 150,000). Blown head gasket

Tesla Model 3. 205,000 miles. Been to 48 states!
Past: A fleet of VW TDIs.... including a V10,a Dieselgate Passat, and 2 ECOdiesels.
2014 Cadillac ELR
2013 Fiat 500E.