http://m.autotraderclassics.com/article?id=223616
ATC: How can one find which paint companies make these colors?
M.B.: PPG, in my opinion, has one of the best interchange libraries for matching factory paint codes. For instance, I just opened the book to a random page in the AMC section and looked up a 1963 Rambler with the paint code P1 Classic Black, then to the right of it is PPG code 9000. Any reputable shop can then color match to that code, then you have to make sure it matches the vehicle or what it originally looked like if you are doing a total overhaul.
ATC: Are these interchange codes only for PPG paints, or are they universal?
M.B.: Primarily its set up for PPG products, but the nice thing is if want to use any other painting systems this is a good baseline. Most other manufacturers colors, such as DuPont, Global, or Sickens, can generally be interchanged off the PPG code.
ATC: How can one find which companies reproduce period-correct paint?
M.B.: If you mean the original look, then its more in the skill of replication of sheen than [using] period-correct paint. Considering changing environmental laws and EPA mandates, most of the paints, lacquers, and enamels used decades ago are no longer manufactured. So it not only becomes a color match, but about the shop/painter having the skill to replicate whatever look it is youre after. Like creating an orange-peel or low-luster sheen, as none of the really old paints had a real high gloss to them. Thats the kind of stuff most people do either for NCRS, or as a standard replication of the original paint. Also, remember even with a vehicle that still has its original paint, it has faded after being subjected to years of environmental abuse and probably wont be as it was 30-40 years agoso matching that may not be somebodys idea of original.
ATC: So is paint/color matching subjective?
M.B.: Absolutely! For instance, the factory could paint [a series of] cars the same color but have them come out differently, based purely on paint runs. There are many variables that affect the way a color appears on a vehicle, such as nozzle size and ambient temperatures. We have a yellow 1973 Cougar in herewhen we look up the paint code the factory lists two different yellows with two different mixtures. So even back then, they realized they had issues. However, the most subjective factor in all of this are peoples memories, which can diverge wildly from even the most faithful representation of the original color and finish. The key is to communicate what you intend to put on their vehicle, and make sure it matches their memory.
ATC: So in essence, youre using modern tools and materials to replicate original paint finishes.
M.B.: Yes, because even if you could find it you just cant use 30-year-old paint. Just look at house paint thats been stored for just a few years, it turns into a gelatinous mess. It is the same with automotive paints: even unmixed they still have a very finite shelf life. The trick is to first match the color, and secondespecially on a concourse restorationis to use the technique that best replicates the original sheen/finish of that car.
