Tracy and all,
The best references that have come to light in recent years for the actual color of PT 109 under JFK are three vintage Kodachrome color photos from the collection of one of PT 61's wartime skippers, Ken Prescott, who has stated he often tied the 61 up next to the 109. The photos were taken at "Searlesville," in the Russell Islands, before the 109 moved up to Rendova.
The subject in the photos, of course, was PT 61, but in three of them,
small sections of PT 109 can be seen in the background, tied alongside to starboard. They are: #1) the 109's port aft hull, deck, and (port aft) torpedo tube, #2) the 109's port torpedo tubes, showing bronze-colored torpedo warheads in the tubes and her stern flagstaff with U.S. flag, and #3) some of the 109's "superstructure," i.e.; the top aft portion of the port cockpit splash shield, the top of the dayroom canopy, the port (aft) twin-.50 caliber turret, the top of the 20mm gun and its limit-stop rail, and the stern U.S. flag. A shirtless crewman, who may possibly be Andrew Kirksey, is seen standing on deck.
In those Kodachromes, the color of the 109 -- everywhere except her
deck -- very closely matches the U.S. Navy paint color
Deck Green (20-G). The deck is somewhat
lighter in color, most probably due to the constant scuffing of the crew's shoes/boots, and is close to the U.S. Navy paint color
Navy Green (5-NG).
Those color Kodachromes were posted sometime during the last year or so on the
PT Boats, Inc. website's Message Board, and I believe they have also been posted (at least photo #2 above has) somewhere on the internet.
Tracy's 1/72nd scale Revell 109 looks good, but with all due respect, and in a nod to the photographic evidence I related above, his green paint job (and the White Ensign Models "Tropical Green" and "MTB Green" colors) is way too light. Deck Green 20-G is a much darker green, and the hull, tubes, and "superstructure" of the 109 in those vintage photos is pretty dark, the scuffed deck a little less so.