I dont know about changing up your Z with all sorts of black pannels. Usually people sell wheels with ideas in mind. Anything else you can think about besides gold? I actually do recal a yellow z that someone on hear picked up this year with black wheels with maybe a red stripe arund the edge. It actually looked nice now that I think of it. When I get home I'll post pics but the wheel design was like what you currently have.
"torque gets you off the line...& hp gets you over the line." - TTKeeper