Mike,
As has been pointed out, for your year carrier you have really two choices, the "Dog turd brown" that was mentioned, I believe that "khaki Green" would also be an option for you, you'd have to check the website references.
I personally really like the khaki green colour myself, and was/had painted my C15A in it (when I still had it). Jordan (who I'm suprised hasn't chimed in here) colour-matched some original parts to get some khaki green paint, so he could possibly provide you with a formula.
...of course, to my eyes, the stuff he colour-matched looked almost exactly like the "Khaki-green" paint available on the restoration market today (Can't remember the code, I think it's 34087, offered by many paint coating makers) but you might see things differently
Hope that helps a bit. Paint is always a tough subject too, as wear/other issues will also cause the colour to change as well...lighting, yadda yadda. Quite frankly, for me, pick a colour that you like, that is in an accurate colour range and spray away....
Tim