I like all the darker colors for the Luxury Line, but the Imperial Blue looks the best with it. On the other hand, White, Silver and Red look better with the Sport Line, with Silver looking the best IMO.
In both cases I just love the contrast between the exterior color and the window trim.
My favorite combos so far:
Luxury Line = Imperial Blue + Saddle Brown + Anthracite Wood with Chrome trim
Sport Line = Glacier Silver + Coral Red + Brushed Aluminum with Black High-Gloss trim