Updating with new link found for docs pertaining to color codes used for U.S. Navy & Marines aircraft.....(some info previously discussed in this thread)
(all PDF links work....best to tap on the "PDF" icon next to the document name)
It is my understanding that HM has the associated paint chip swatches of these color codes, yet some colors don't come out completely right as the paint chip samples after applied and dried on the model.
Btw, there is a mil-std-2161(AS) Rev with year 1985....however this copy remains elusive and can not be found. Good luck if anyone cares to try and find it.