The camo is more for other people than it is for the deer. A blind will be something of suspicion no matter how it is camouflaged for the first few days it is in place. Similar to a blown down tree- the deer see it, are cautious of it and then pay no attention to it within a few days. If the blind is for use on private land I wouldn't paint it because of the odor,also some chemicals in the paint will deteriorate the material faster, same thing goes for camo net, I have yet to find some that doesn't smell like dyes and chemicals. You'd be better off using natural vegetation to cover up the blind which I do anyway even with a new blind to help it blend in with the specific environment to try to hide it from other people. Plus cut pine limbs for instance helps to provide some cover scent. Hope I helped.