I think it is perfect the way it is.
I love the White with the Chrome and Blue Accents.
Would love to pics of the interior if you have any. That has always been the knock on GM, Corvettes, Pontiac's, that the interiors were cheap or plastic. But one of the coolest features is the HUD (Head Up Display) The seats on the C5 are terrible and lucky for me the previous owner put custom seats in. I love the brushed aluminum gauge bezels and they are on my list of mods to do. I would have to believe that Chevy put some extra touches on the ZR1 interior, probably a better steering wheel, special badges, seats, and instruments engine, ie supercharger. I have only seen one up close and personnel at the Chevy dealer when my Tahoe was serviced, and it had a big sign on it to look but not touch, as well at the $110,000 window sticker, so couldn't really get a good look at the inside.