[ Sorry to take so long in jumping in on this topic, but it's been a busy two weeks, and I couldn't immediately find the slides I wanted.]
While it's quite possible that the baggage car used for storage was painted in "jade green" [ especially if it had been painted by B&B forces rather than MP&E ]. most -- but, granted, not all -- PC repainted psgr equipment received a different shade of green, which MAY [ I can't recall ] have been termed "Forest Green". Here are six examples, all taken in 1973; there are repainted PRR and NH MU's, repainted NYC commuter coaches, a 'Congressional' coach with a green letterboard, and a coach acquired by PC in 1970 [ bonus points if you know from which rr ] that's an interesting "green above stainless".
Finally, off topic but interesting, is a PC business car in Amtrak colors, dating from the short lived era when Amtrak said if a rr wanted its equipment hauled in "Amtrak premier trains" [ such as they were ] like the Broadway, it had to be in Amtrak colors.
I hope these photos help, and give you some modelling ideas.
With best regards, SZ
Whoops; I had 'double prints', and must have eliminated both instead. Standby.