458 Speciale standard rim touch up paint

You might have some luck with this:

https://www.amazon.com/Rust-Oleum-7776730-Protective-Enamel-8-Ounce/dp/B0019R017U/

I use it mainly for blackening the engraved marks on tools, such as Micrometers and such. Great paint. Matte finishes can be tricky, but sometimes you can duplicate them with a flat base color and a little satin / semi-gloss over the top (if needed) using an air brush or the like.

For silver Ferrari rims (such as on my 355) I was able to use a Silver Toyota factory paint that made curb rash vanish into thin air

You just have to use a bit of trial and error sometimes to find what works. You never know... I've used Sharpie markers to fix blemishes in Carbon Fiber gel coats. Eventually something will make it blend in or disappear.

Good luck!

Ray