Utah Rails lists the color of the anti-glare green as UP Common Standard 22, No. 30. The Pantone color match appears to be 553, Dark Spring Green. I have not found a cross-reference from Pantone to FS 595.
What have you found to be the best color match among model paints? Southern Green looks about as close as I have found so far.
Looking at one of my own locos, and this color chart that might be of some help to you, http://www.microscale.com/Floquil%20Color%20Chart.pdf I think Southern Green is a pretty close match. According to the above chart, Model Masters makes an enamel paint equivalent to Southern Green called European Green, part number 1764. Hope this helps.
Thanks, gmpullman, but I doubt I have the skills to cut the decal to match the compound curves of an N-Scale (or any other scale) F3A. Microscale has some HO sheets for E or F units, but I’ve never seen any for N Scale.