if u r fat and drives a lot in the afternoon, black is the best choice for u, because every time u park under the sun for half an hour, it'll be a super hot inside and u won't need to go to the gym to loose weight, white car will make u super fat because after 2 hours under the sun it'll still stay comfortably cool if u have good tints.

also if your car's wax is gone and u drive through the rain, u can have an excuse to clean your car because it'll be full of white / grey dust when it dries, white cars doesn't have this problem.

even if u park your black car for a few days under the roof, u can easily spot the dust even if the car is fully waxed, white car doesn't have this problem.

if there are minor scratches on the black paint, u can easily see them because those scratches will be white color. white colored scratches on a white car? their invisible.

of course grey car is the easiest to maintain. u haven't actually owned a black car do u? wait till u do....