Have you ever seen an 80's to 90's camero that was pink on top, red on the bottom?
Red being the most expensive color had GM (ppg) make the formula using purple and orange. The purple component faded fast.
The glasurit formula for the same color used 3 different reds and black. Ground pigments are exspensive. But more colorfast.
So a formula from competing brand, and now for products that are gone make that info trivia.
Every brand of paint makes their product and markets to a price point. This changes pigments based on cost. Which changes tone and strength of toner color.
So volume of toner only matches one product line. I have been known to tint brand x acrylic urethane with brand y. The chemicals do mix. How much it changes paint performance, don't know.
This is why buying paint nowdays is so hard. PPG base is over a thousand dollars. And no more single stage besides fleet, black and white.
Choosing a clear is a fight between price, durability/dieback and ability to polish. There are a couple decent performing cheaper clears for collision work, but get it on right because you won't be polishing it.
All the mopar colors I've mixed have been pretty accurate. I could do a half pint just to see how good it looks.
Then we could see about a scan or sprayout.
There were a ton of variation to this color, back in the early 80's when I was first exposed to a 70 duster in fm3.
The spot repairs were all off from the original colors. Like how lime light is often off.