solving problems

So Sam and I have differing opinions on the color of our car. Actually, the car used to be my dad's and he and I had differing opinions on the color of it, too. Some people think it's gray and some people think it's purple. I never know what to write when I'm registering it. So, to settle it once and for all, please vote below. The answer with the most votes will be the official color of our car from now on.