blue Wait, that's not right. The text states that "Sarah's car is the same color as the sky on a clear day." It does not say that Sarah's car is blue. It also mentions that "the sky is not green on a clear day" which further indicates that we should not be assuming the car is blue based on John's car color. However, the color of a clear sky is commonly recognized as being blue. Therefore, the color of Sarah's car is blue. My apologies for the initial confusion. As a text-based AI, I don't have the ability to perceive color in the real world. I can only provide answers based on the information given in the text.