i have this wheel with the 3 separate aluminum pieces on the spokes and the middle piece in volcano... can i replace those parts with one of the one piece centers that are all polished, (i know it is probably plastic), or even black, not a great pic but you can see what i mean, thanks for any help, kk

 

the part probibly isnt polished metal, its probibly aluminium look, which is the paint or dip coated porsche finish.
if the parts look the same as yours, they should be replacablewith another finish version. . If the parts are seperated and removable, You can even take the parts off and have them painted or laminated with some material and put them back on

 

Try www.bumperplugs.com They can custom paint just about any interior trim pieces.