OK, the final report on trying to find a paint that matches the wheels of the 2019 BRZ (I assume the colors are the same through the years).
No luck in trying to find a single color paint that is even a half-way close match to the wheel color. The closest I could come (to my eyes) is mixing Toyota 1G3 Magnetic Gray with Ford Color AFM0236 Charcoal Silver Metallic, in roughly a 2:1 ratio Toyota:Ford paint.
MBI Auto sells on Amazon small containers of paints in plastic touch-up bottles -
https://www.amazon.com/sp?ie=UTF8&se..._merchant_link
I'd start by adding 1/3 of the container of Ford paint to the Toyota container (they come less than half filled, plenty of room), try it for a match, then add a little at a time up to about 2:1 ratio (half the Ford paint). The result is a blended paint ready to go in a small bottle with a touch-up brush built into the top.
It's
NOT a perfect match - far from it - but it's closer than any single paint I've tried.
I'd love to hear about anyone else's experiences, surely someone else can come up with something better (and easier and cheaper than paying a shop to repaint all 4 wheels just to fix minor curb rash).