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.
Here is an inexpenive and effective deer feeder I made recently.
No batteries to go dead, no hoisting it up in the tree, plenty of capacity, very easy to fill - so far, I love it.
I have made two of these and they are easy to build.
An empty 55 gallon drum, some 2x4's, some PVC tubing and fittings, a little bit of hardware and some paint - and you are ready to go.
I designed it so you can stand on the lower rung and fill it - the top is about 6.5 feet above the ground.
It holds about 375...