Hi Lowglow and welcome to the site.
Your Erie 77 was made in 1940 which is found on page 165 in An Illustrated Guide to Gas Pumps (First Ed) by Jack Sim. Jack is a member here and you may want to purchase his second edition which you can do right from this site. The Tressler Comet globes were made from 1955-1970, depending on which one you are referring to.
(Gas Gobes by Benjamin and Henderson p44-45 Vol 1). I am not sure if anyone repops them, so you may have to hunt for an original.
Are you going with the Tressler/Comet theme because you like it or because you think thats what it was originally? If you are going to repaint it anyway, you can do it in whatever company you like. As for paints, I will let the experts chime in but I know they will tell you that if you are going to put any decals on it have the paint mixed to match the decal. If no decals, match the paint to the colors on the globe or ad glass. Most auto parts stores will do this for you and some can even put it in a rattle can.
Post some pics so we can see what you got!
John


Wanted: Original Jenney Gas, Husky, Marathon, and Frontier Globes