I am interested in spray painting the door lock set for our front door. We only use this door for the occasional sales person so maybe 2 times a month. Right now it looks to be original to the house (30+ years) and is badly tarnished. I dont have the $$$ to buy the one I want at the moment but removed the old one to paint the door today (because I had the paint and am going stir crazy). Do you think the spray paint for metal would hold up for several months of very light use?