Hi Tony not sure. I will have to get some mixed up. At least with the british paint the standards still exist and exact colours can be made.
I am also saddened to learn that all the good work Bob Mosley put into getting a set of standard colours up is lost.
Protec in Adelaid no longer employes Bobs contact and the formula was never put into the computer. I think this is a tragic loss of some hard done research and Bobs legacy.
I am working on three mixes of green and still at a loss as to how to transfer the Light stone on my vehicle onto something reproducible.
I know at least that modern pigments react to light quite differently to the originals so no photograph will show the paint identically . Its all about how radio waves react with particles on a surface.
There is also a problem /difference with matting agents . The modern ones will not go as flat as 1942/3 paint. It seems to be a struggle for Modern paints to get below 10% which is low sheen .