If getting reflective surfaces on the buggy to enhance visibility at night is the issue, it might be a solution.
Of course, the State would have to accept that the absence of orange really has little effect on seeing the buggy in daylight, and the Amish would have to accept something which though it did not appear as wordly, would enhance their safety and that of the vehicles which might hit them.
It's never simple, but it could be simpler.
It might be simpler yet if someone could devise a reflective surface which appeared to be black in daylight.
Really... the appearance of the horse apples on the road ought to tell an aware driver that there might be Amish ahead...
But that would require...
#attackwatch - AMISH AHEAD.