The ones I recall were white, with 6"-8" at ground level painted black. Of course, I also remember painting mine the same way, but the picture below says otherwise. Luckily, all are still removable, as there's still lots of other work to do in this area.
Mine are about 3' high and only 5' apart - they look right to me, but some real ones I've seen not too far from here are about the same height, but 12' - 15' apart. These are very old ones, and have two cables, as will my modelled versions.
I used .100" styrene rod, first distressing it by dragging a razor saw along its length. After painting, the individual posts were cut, with the tops bevelled, to help shed water, then touched-up with white paint.
Wayne
