but it also says:

People whose car is:
Black, dark blue, or silver Experience: Consistent moods
White, sunny yellow, or bright blue Experience: Modest mood swings
Orange, red, bright yellow, or emerald green Experience: The most pronounced mood swings

probably because people with black cars know that there cars are the most attractive and elegant...... consistantly, all the time. And having a black car only makes you conifdent in one thing, there is no better color..... lol