You can't do Titanium Shadow unless you steer clear of the Premium Package, which is going to prevent you from ordering Enhanced Premium Audio (that used to just require nav even if it was ordered as a standalone, but now it require ZPP).
As for trim choice, there's a reason all the Fox Red interiors on the lot were ordered with Carbon Leather. I personally believe that anthracite has no place in a car like an M3, but it DEFINITELY has no place with Fox Red. As for aluminum, you may be able to find some pics on these boards with Fox Red and aluminum, but I personally think that many colors in the interior creates a clash. The trim itself is very nice, but black, red, and silver is a bit much IMHO.
EDIT: Pics of Fox Red with aluminum (yet another demonstration of how wildly Fox Red varies in photos):
http://www.m3post.com/forums/showthread.php?t=399702