After reading the post about whether to restore or not to restore, and furthermore, where it discusses about the existing painted finishes new vs. patina and all, I decided to offer the following as an idea or alternative in paint solutions and codes, if you will.
But mind you, I have practiced the following only in remote areas where it doesn't really matter or is pretty much concealed, so accept with a grain of salt. It is not a concours solution but one that helps me live with my imperfections, or until I decide to go for a 'complete paint overhaul', if I decide to do so down the road.
So, in addition to indicating GM's Code as Peking Red (I do appreciate learning that, BTW), then one might consider using and mixing ready made sprays.
I've also used Chinese Red on my *Colorado Red (*supposedly), but tends to be a tad bit brighter on mine, though not much.
So I tried mixing Sunrise Red (brighter) with Colonial Red (darker) and made a sample to match before applying.
The real point is they make a lot of different color variations so where you have nicks and what not, then it becomes a matter of experimenting and matching up.
The one thing I still need to determine is how well the final outcome would be if I were to sand, compound and buff out these small areas given the existing paint I have. I've had practice with this sort of thing before in the past when I did a single stage paint job on my former sports car and adding to dings or scuffs and then buffing out along the way.
I think of it as a compromise, a solution for small or concealed areas, a matter of trial and error.
Paul