Scott,
I don't know about silver, but I'm green with envy.
Your description of your car is precisely what I dream of every day. I think silver brings out the metalic beauty of the cobra's lines, is classy and eye-catching at the same time, but accents the simple brutal mechanical nature of a Cobra. Good choice. I've seen the Mercedes color on a Cobra in person and it is really awesome.
MT
ps. Decooney, that is a gorgeous pic of a gorgeous car.