^ good point on the matching factory colors, reminds me of something..
after I got home from dropping off wheels at powder coater I wanted to look up the color we chose.. I wasn't getting the warm fuzzy I was expecting regarding factory color names so I called Axalta to see what they had to say.. the territory rep called me back fairly quickly and we had a nice chat about powder coating
he explained that they are required to obtain permission from the manufacturers to use licensed names of color codes and the fees are steep.. and since there are so many colors and competitors is just isn't worth it to obtain all the credentials to name and advertise their products with reference manufacturer's color.codes..
of course larger companies may do this for certain brands or colors they can sell in volume to be profitable.. and I would imagine the company that made the actual paint for the OE would have some rights to use the factory codes.. but it's just not an economical option for every other paint company..