Looking high and low for a tool box to put in the back of the truck. Dont want plastic but I do want black. I can buy a new box for $250-300 but I'm finding used boxes (tractor supply & Kobalt brans) on Craigslist in silver and wondered how paint would hold up. I imagine a lot of prep would have to go into it? Can you paint these boxes and have it come out well and last? Let me know what you think and what you have seen.