Stumbled across this website tonight while playing around with some other things. It has a BUNCH of the US Navy color specs.
http://www.jpsmodell.de/dc/usn_e.htm#1940The color swatches aren't necessarily accurate, but it at least indicates the exact ANA number for each color which can be matched up on another source IE Simmer's Paint Shop.
Looks like if you go up a couple levels you can get to other branches (USAAF) and even nationalities.
I think this might be a VERY good resource for identifying what colors ought to be used on a skin.