I replaced my silver modern line grills with the luxury line chrome. I ordered it from my dealership -- they cost about $70 total from the dealer -- not as bad as I thought it would be. (I'd sell you my old grills, but I broke a few tabs removing them).
For the window trim, I got quotes from the dealer parts dept. as well:
http://www.f30post.com/forums/showthread.php?t=776559