My previous screenshots were taken from Quick Drive scenarios. I think these use 3D weather by default.
Here are a couple from a Donner Pass freedom at Colfax, weather Summer Clear, 1600 hours.
It is not so much the carbody that bother me, but the underframe and trucks. I think these parts could use a darker colour and more dirt or weathering.
The Bloody Nose red seems a bit too bright to me.
However, colours are a matter of personal preference, monitor setup, etc.
Screenshot_Donner Pass Southern Pacific_39.09826--120.95378_16-01-42.jpg
Screenshot_Donner Pass Southern Pacific_39.09780--120.95418_16-02-20.jpg
Screenshot_Donner Pass Southern Pacific_39.09746--120.95471_16-02-49.jpg
The default locomotives are too dark in most eyes?