After a lengthy search, I finally had to contact Gaco directly this summer to get paint for my snout tubes. The hypalon paint can be found at www.gaco.com/H22.html
, or call Gaco western at 800-331-0196. They will only sell black or white in one gallon containers, which means you have to try and mix them to get the gray color of your choosing. In order to get a specific color, you would have to order 500+ gallons. It is also very expensive; one gallon goes for apprx. $160 plus haz-mat shipping charges and a small order surcharge that they may tack on. I don't know the square footage of my snout tubes (a lot), but three gallons was plenty. The stuff was also pretty thick, so a warm and well ventilated place along with a solvent to cut it down will help. Good luck!