This winter, Scotrail took delivery of a bulk-load of white (rather than the normal orangey-brown) grit to keep the platforms ice-free.
Its appearance is more salt than muscovado, but also more akin to snow, or heaped hoar-frost. After snowfall, the salt does its work in camouflage, leaving no crumbled digestive stain.
Now we are at the end (Central Belt Shuffler hopes) of winter, the salt remains, even though the snow and ice are gone. The platforms remain frosted, a little bit of Narnia, sprouting lamp-posts and station signs, on the daily commute.