I finally figured out a way to get nice warm sunset colours while still having thick grey haze which makes the clouds disappear into it.
Compared to other TG renders the histogram in camera raw looks very rich in tonality, so I'll definitely be experimenting more with this method.
The scene itself is pretty simple, only a couple of nodes/simple shape shaders for the field rows and dike.
Objects are mostly Silva3D/Walli's.
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I might revisit this scene some time later, now it's time to move on to something else.