From my motorcycling days, I remember the safety value of reflective decals. If you are interested, do a Google for same and you'll find several vendors. I ordered a set of "lightening bolt" helmet decals that are red and reflect in BRIGHT red! Sorry, I don't know how to attach a photo. Anyway, you can get different designs, different colors, etc. NOT easy to remove from painted surfaces, but doable (rubbing alcohol and LOTS of patience) without damage. I used a vendor called Appliedgraphics - reflective helmet stickers decals, motorcycle decals, helmet decals, biker decals, reflective motorcycle decals, bicycle decals. but I have no financial interest, etc. Fast shipping, though, and seem to be decent quality. I'm sure other vendors are just as good, but this one had an eagle head decal that I liked for the little triangular windows in the rear sides. FWIW!
That's pretty cool, I particularly like the black decals that show white when picked out by a headlight. Hey, we could even get PriusChat.com reflective decals. Danny?