Yeah, I'd go with something only kind of shiny. Goes with the "stealth" vibe. Totally flat might be kind of dull.

(on an only slightly related note, a friend of mine wrote something in his blog about how much better everything would be if everything was stainless steel. I'm thinking about telling him to buy a Powerbook. He's a Windows SysAdmin, but also a *nix guy, so I'm not quite sure how well he's going to respond to that idea)