I'd go with the exterior color you want. You could easily change the pieces, it would probably be around a couple hundred bucks or so. $250 from the site below, it's definetely worth paying $250 to get the exterior color you want. I say get the silver trim.

But then again, I'd say get the Silver exterior too, but that's your call. Check it out:
http://www.handaaccessories.com/accint03.html