Hello all: I posted this earlier and received no reply. Surely there is someone out there with information on this subject. I am looking for information regarding the colour on each side of the targets (round) on D&RGW (narrow gauge) switchstands. I am particularly interested in the era of the mid thirties. I assume that the low stands were used in the yards and tall ones on the main line. I would appreciate verification of this. Could the colour combination have varied between yards and mainline?