I have rear lights, and I already have some reflective stuff, but I want a big reflector on my rack. I've decided on the flat oval generic automobile/trailer reflectors.
Does the known general warning of red overcome the increased brightness of the orange/amber? I've been playing with them and I just can't decide.
Possible orange pros in my case: brighter overall (by a large amount) and adds another color to the rear of my bike (have white, 2 shades of red and yellow as of now)
Possible red advantages: Harsher warning color, red things along and on the road are things you know you want to avoid and being known that it is likely the rear of something (not sure that this is any real advantage in this case). I don't have any large patches of red right now, just some tape wrapped around the seat stays and rear rack supports, bar ends and blinkie(s).
More worried that orange, while bright, will blend in with other more common orange reflectors on and along the road.
Not going to do both at the moment and not terribly worried about any legal aspects.