You could order both a 50 and 60 (some here did). They aren't really available to even dealers yet, but likely 10k for them once they are. There are some aftermarket bronze options though. But it would probably be easiest and cheapest to just refinish 1020s though.
I had the same wish, my iX 50 is dark gray metallic with the bronze package trim. I could not configure it with the bronze rims, it just was not an option for my 2023(if it ever clears QC at the factory and gets on a ship). It was only available on the iX 60. I have not spent any cycles attempting to overcome that, and I am not sure I want to spend the money on a second set of rims.