"Standard Wheels"

It seems standard alloy wheels (not thinking about the carbon option on Pista) on all new models can be painted with Ferrari colours.For example if you want shinier wheels it is a cost option to have them painted Argento Nurburgring or similar.
I fancy getting wheels unpainted in the colour of the bare alloy.Has anyone done this or know if it is possible ?
I am assuming the colour would be similar to the look on a Challenge car but could be completely wrong.