Yeah, you can buy sheets of 3M reflective material actually pretty cheap, $4-5/square foot from sign supply places. Then you can cut whatever strips or shapes you need to fit. I cut blue to fit blue areas on my helmet. In daylight no one knows it's there, but it glows in headlights. I also cut pieces to cover bare parts of my light brackets, narrow strips to go on rack supports, strips on the sides of my fork, etc. I don't put it on my actual frame, or at least haven't yet, mainly because not muc of the frame is visible from behind when I ride. I bought a sheet of each color I could get - red, blue, yellow, white, green.