I noticed in the box while unpacking there were some decals. I left them off because I like the subdued look of the Solo. I put those silver stickers on the rear arms. I almost took them off. Took the Solo outside and was flying around, about 200 feet out at 150' altitude. I kept noticing something flashing at me when it was turning. Thought it was the camera lens. It turns out it was the stickers on the arms and they are pretty helpful for knowing orientation.