....Forest Green which was VERY popular truck color in the early/mid 50's.
Forester Green was the DEFAULT color for most of the AD series trucks (47-52). If you didn't ask for something else, you got a Forester Green truck.
But yes, that Brewster Green was a standard available color, nothing special about it. IIRC, Brewster Green was a standard color for the earlier trucks and resurrected for the late 50's.
Per Page 75 on
this document it may even have been the default color (being at the top of the list of solid colors available).