Here’s a great video how to sand it out using a Dremel (or the like) and sandpaper.
And then hopefully you can find paint to match. Perhaps you could contact the wheel manufacturer and they’ll give you the paint code. You could then send that code to automotivetouchup.com and they’ll perfectly match it and put it into a nifty paint marker. You can also get a primer and clear paint marker from them as well.
Or just repaint the whole darn wheel, but that seems unnecessary. Then you’d probably want to repaint the rest of the wheels since one would stand out due to the sun possibly fading the wheels from the original color.