Going back to the OP question way back in the thread...... I have lights on my feeders, red lights, but the cost of batteries and the lights only lasting a couple days on those batteries has killed that. I have plans to upgrade my feeder to 12V, then I can run the lights off a large battery with solar chargers and maybe get feeder lights that operate when they detect motion for months. Until then we use thermal monocular to find hogs, stalk in range, then light them up with white lights and shoot them. Hogs may not see red lights or green lights, but they can sense the light and I think they can maybe see shadows from those lights, and they take some time to get accustomed to them. I don't know this as fact, it's what I see watching them in the lights.