Unfortunately you didn't really describe the color your car is, just what it is not. Any Ford Dealer, or any paint shop can tell you the correct color either from experience, color chip, or from the vehicles VIN. Your local Ford dealer will have the correct touch up paint in stock or will be able to order it for you. Also some body shop supply companies will make up a spray can with your exact color if you prefer spray over the little touch up bottles from the manufacturer. There really weren't that many colors available for the 2002 Mustangs so it should be an easy to get your exact color.
