It's Black Paint, same as my Camaro Logos, Bowties, etc. car came with them painted. im pretty sure it was just sprayed with black paint. i think i am going to have them spray clearcoat over it to avoid chipping, etc.
Its very easy actually. I just lined it up with the edge of the plastic trim ring and went around. no tools or anything...just patience. It didnt take long and if you mess up, just peel it off and re-lay it down. the stuff isnt expensive, so give it shot! (:
Rims are 20"s same spec as GM...I paid about $150 per rim on Tirerack.com. Tires are Nitto's. Eibach Prokit springs were about $200.00. You can get a local shop to instal, align and adjust for $300.00 to $500.00. You should be able to get it done for around $400.00