So here's an update on my scrape. Turns out most of the visible "damage" was just yellow paint transferred from the concrete column I swiped (I had initially thought it was the color of the car below the paint surface). After washing it with hot, soapy water and a Mr. Clean 'Magic Eraser', the scrape is barely visible. For those not familiar, those Magic Erasers are dense sponges made of melamine foam. Its tiny pores make for a light abrasive, like an extra-extra-fine sheet of sandpaper. Took the yellow paint off like magic. I'll apply some wax, too, but for now I really have to look to find it. I may still get it fixed eventually because I know it's still there, but this simple solution works for the time being.