Richard,
Your canoe looks to be in very nice shape based on the one photo you posted. Just to confirm the ID as correct you might post a couple more pictures especially of the bow deck, carry thwart and stem profile (side view). Assuming the canvas is still tight and the canvas filler and paint intact you can sand the exterior and recoat with any good oil based paint. Latex should be avoided. The old paint and filler was loaded with lead back in the day so sand it outside with a respirator. The health risks of lead exposure are well documented. There are a couple books that are often recommended, "This Old Canoe: How to Restore Your Wood Canvas Canoe," and "The Wood Canvas Canoe, Complete Restoration Guide." You should also spend time going through the threads on this site. A world of info is available. As far as what did Old Town green paint look like you can again search this site. The question has been asked and answered many times. But the best answer is paint it any color you want. Back in the day people got to choose what they wanted and so should you. There were likely several shades of Dark Green used by Old Town over the years so there really is no firm or correct answer.
Good luck and have fun.
Jim C.