Not sure that is a good idea due to the smell spray paint gives off even after it is dry. I would just get a cheap after season vest for a buck or two and either pin it or sew it on to the back pack. No need to give the critters and more of an atvantage then they already have.
I don't wear it to hunt. Just haul meat out after the kill.
I usually just wear a waist pack to hunt in. I carry some food, and everything I need to dress out the elk. I then carry back the backstraps and loins to the Jeep. Lock up the gun, and grab the big backpack and go get the meat. At that point i'm not hunting anymore, but I think the blaze orange laws still apply.
So you have been thinking about making the trek out west for a DIY big game hunt. The pronghorn antelope is an excellent choice for your first western big game hunt. It is a good choice because it offers the first-timer an introduction to DIY western hunting with a high probability of success and without the exertion or need for detailed planning that a mule deer or elk hunt might require. While there are several states that you could conduct your pronghorn antelope hunt, I...