search for paint code wheel apex mg zt 260

[David]

I'm not aware of a particular paint code, only that it's referred to as Shadow Chrome

The code should be MBM, but is no longer available, if indeed it ever was available as a paint (as against powder coating). Read this I found on MG-Rover.org, for what it's worth:
"I refurb wheels in my business and the only "proper" paint available for shadow chrome is usually black base with German fx or sparkle silver over the top. I've had very good results with both."

David