Re: I am sooooo stoked to get my 14" redline SRT!!!!
I'd be concerned that it's a little too "orange" for the redline. The tan interior looks great on the red Ferrari's, however this isn't tan.
I used to own a Boxster (from new) that had a very similar interior color, from what I can tell. It was called "Natural Brown" and was an extremely soft, hard wearing, and expensive leather. It also had an orangey tinge to it that I thought looked extremely pleasing. With a black exterior it looked fantastic. So I've gone with the same combination with the SRT.
Personally, I'd stick to the neutral exteriors with the Sepia, but this is without seeing it. Who knows, it might look fantastic. Not sure I've actually helped at all here..