The scene shows 10 circular lights in a horizontal row on a white background. Lights on are purple with glow; lights off are gray. Initially, some lights are on and some are off.

Your task: Modify the light states so that the 3rd light from the left (counting from left to right) is on (purple with glow), and all other lights are off (gray). Turn lights on/off as needed. Lights change from gray to purple (with glow) when turned on, and from purple to gray (glow disappears) when turned off. Lights stay in fixed positions; only their states change. Only modify what the task requires; keep the background and any other element unchanged.