I copy here a post from OpenStreetMap Forum>Editors, to which I have received no answer: I have found the presence of Public Rights of Way .kml files in JOSM to be very useful for comparative purposes. One drawback is that they appear as grey polylines. I cannot see a facility to change colour, and wonder if anyone knows differently? A colour key is present with a hexadecimal value as an attribute, but changing that has no effect. NOTE: I have changed the colour codes in Notepad to no effect, either.
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