Quote:
Originally Posted by dimlee
Black is good... Easier to spot those trains on dark background.
We need them not for travelling but for hunting. 
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+1. Dark smoke makes locomotive busting even harder at night.
During WW2, steam locomotives could sometimes also be detected at night due to sparks rising up the chimney from the firebox, and the glow from the firebox when the stoker opened the door to shovel in more coal.