Chap I've met had a full concours re-spray done on his classic car and cost him £8000. They also had the car for well over a month. As above, a decent full strip down re-spray will be about £2000ish give or take.
You could always vinyl wrap your car (not sure of cost) and you can always return it back to standard later. Have a look at It's A Wrap on the interweb, one of their projects was turning a black car, White.
:happy2:G