In case anyone would like to see the final look after tinting, here is the look of a brand new 2013 335i M Sport. The contrast really brings out the paint color. The professional installer used Llumar Tint (a.k.a. Solutia, Inc. and subsidiary of Eastman Chemical). 38% Visible Light Transmission.
Rear View w/ OEM M License Plate Holder and Twin Tailpipes:
In front of the Adidas and Polo Ralph Lauren store: