My wife and I once visited an old college classmate of mine on vacation. We stayed with him and his wife for a few days and had a grand time with them. He’s a pastor, too, and so we had a lot in common. And as an added bonus, he plays guitar, so we had that in common, too.
He had a couple of wonderful guitars and an amplifier. But he told me he was disappointed in one of the guitars, and the amp, too. He said the guitar, which originally was a beautiful pearl color, had become discolored with age, and was now a dull off-white. He said he was thinking about getting rid of it. And the amplifier made unpleasant sounds like static, and the volume would drop unexpectedly.
I asked him if I could take a look at them. When I saw the guitar, I could see what he was talking about. Its former beautiful white was now a sort of yellow color. But as I looked at it closer, I said, “Can I try something? Would you bring me a damp rag?” He brought me one, and I proceeded to rub the front of the guitar, applying a little “elbow grease” as I did. And lo and behold, after a few moments of rubbing, the beautiful white pearl finish began to shine through.