Anyone who cooks at all knows there is never a shortage of empty tin cans in the recycling bin. There's also ALWAYS a shortage of where to put all of your stuff. See where I'm going with this? You can use spray paint, or acrylic, or really any kind at all. I used a bit of hot glue to make sure the inside, where the top came off, was safe. Just went right around the ring with the glue gun.
If you're like me and don't want to use spray paint, you can put one coat on just to rough up the service (it won't cover the first time), then go back over it once that's dry with whatever color you like. It's easy, fast, convenient, and helpful.