This is hard. The shades of bronze and grays have a huge impact on final results and black is extremely boring.
It tends to a crap shoot unless you can see them in person on the vehicle. Photos can be very deceiving.
Good luck
I like to different look of Bronze since you seem to see less Bronze rims than black. But I think i would get tired of Bronze pretty quick, where the Black is easier to live with.
I am going black.