Hi Don,
I go to my PPG dealer (car quest) and ask them to call the color lab in strongsville Ohio 440-572-2800. If they have the color in the old lacquer they can do a spray test panel and color match it in Omni or Concept.
This way it will be in the computer and available to all dealers across the country. (we will all have access to the same formula for color match)
I have been to the color lab and donated two MAFCA books to them as an aid in helping them identify colors.
If you have any trouble please let me know as I am passionate about getting all these colors updated. I hope this helps,
Ken