circular, multi-colored light projection on a white wall in a room with a grey carpet

circular, multi-colored light projection on a white wall in a room with a grey carpet. The light projection is centered in the image and is predominantly green with a pink outer ring. The light source is not visible. The room appears to be empty. The location is a modern art gallery in the city of Dugny, France, based on the provided coordinates (latitude: 48.954, longitude: 2.443).