This is a genuine BMW interior reading light for the rear left side of the vehicle. The color is sky grey and the part number is 63316972973. This light is designed to provide illumination for reading or other activities in the back seat of the car. It is an original BMW product and is made with high-quality materials to ensure durability and a perfect fit. This reading light is a great replacement for a worn or broken one, and will help to maintain the overall look and functionality of your BMW's interior.