I've done one end of the maroon windscreen posts. I used Humbrol matt 28 enamel, as I found it easier to remove any overspill with thinner than for acrylics. Not that easy to do but I'd rather not try it on the N gauge version. It's not altogether clear where to stop the grey paint so I took it to the windscreen wipers.
Attached pictures of done end and not done end. I think it looks much more like a maroon Western when painted.
Sorry about the Super4 track on my test shelf - at least the sleeper spacing is correct for 4mm.
Next question- what's the best glue to fix the nameplates on with?