For my car, that is currently at a Shop ready to paint, we were trying to get the most accurate color match.
More common brands were tried and we were having difficulty getting something I liked.
The shop owner contacted another well known restoration shop and they recommended looking at Pro-Spray.
My shop owner tried but ran into dead ends.
The company is UK based and has an office in the US that no one ever answered the phone.

So, the indication was not good. We moved on.

Maybe they provide a great product, but it seems support in the US may be difficult to impossible.