Depends what you mean with "flat". The white 4Cs are :
- Launch edition only : Carrera white : this is a matte paint
- Pastel white (option code 5CA) which means : no metallic flakes finish layer (like the grey one), but not matte.
The same goes for black (Alfa Nero 601) : so pastel, no metallic finish, but not matte. Almost looks metallic even.
From a previous post : Alfa Romeo 4C at Balocco Race Track - YouTube
- Mother of Pearl white (Madreperla Bianco) : shade differs depending on viewpoint, but still shiny. Sort of the white version of Competizione red. Presentation Alfa Romeo 4C (Bianco - Madreperla) January 2014 to Belgium - YouTube
This will make finding a matching white wrap a challenge I think. Also, the black colour of the headlights does a good job of hiding exactly how "knobbly" they are. The front lines leading up to the lights are arced and tense, sharp, and end into the visual black"hole" of the headlights. If the headlights are made white the lines will go on and meet a lot of bumps with the bulbs that stick out a bit. Not sure what this will do so I would first try it out IRL without doing anything by pulling some cheap removable mockup plastic over it to give a rough idea what gives.
On wrapping : one of the reasons I opted for black is that I wanted to -perhaps- wrap the car in the matte red color of the prototype. Or maybe even a grey version of that. Alfa Romeo 4C Concept Trailer - YouTube
Since the 4C color runs into the interior I thought that this could be best achieved with a black base.
However, I talked to a wrap-specialist (not his only line of work, his main business is providing liveries and custom / period stickers for vintage racing cars) warned that the glue of the wrap has a tendency of eating in to the layers it sticks to. So that means the glue is very hard to remove from the plastic (therefore possibly needing mechanical intervention, hence big chance of damage) or even rip away underlying paint layers. So perhaps I'll just save myself the grief and stick to black.
My thought then was to have the standard covers wrapped in carbon print. It's still an option I guess but there are two drawbacks : (1) it stands the chance of looking cheap / wannabe depending on what the result will look like. (2) it will probably mean some people not experienced with the car will be trying to take off the covers to be able to better wrap them. Don't think so.
In the end : when I saw a (red) 4C irl (and I heard it said by others myself before and did not believe) I was blown away. Pictures do not do it justice, it is fantastically pretty and the headlight covers and those massive mirror stalks do not matter, you do not notice them. For me best to compare with a beautiful women, naked and in a very suggestive pose, with a tad too much eyeliner.
(And it makes people comparing it to a Cayman look like very silly or on the take, but that's another thread)