I have a few paint chips on one wheel I would like to fix.

Where can I find the right color to match the silver wheels?

the silver wheel color code is A54

you can order this from http://www.automotivetouchup.com/

note that the wheels are painted same way as the body: base and clear so you want to order color and clear ....

(found this code buried away in the Sherwin Automotive paint database .....

A54, 79742, Wheel, Brt Silver Met

Format is: color code, SH formula #, application, color name)

Thanks for the info. I just need the base coat.

From your experience, Is it an accurate color match for the Challenge wheels or a "generic Bright Silver Met" formula for all Gen 2 Mini wheels?

this is the only silver wheel color that appears in the list

You were right. A54 is the only color for the silver wheels. Today, I received a bottle from Automotivetouchup.com and it is a perfect match.