@KonniRichter
Made using CSP 1.75 preview1 and Sol 2.1.2 beta 2. I cannot guarantee the same image if other versions are used.
Important:
Exposure must be at 100%
Saturation must be at 100%
It is necessary to open Sol Config, go to page 17 in Nerd Ambient and adjust the saturation to 20%.
Go to page 5 in CSP Lights and turn on "controlled_by_sol".
You should also open the ppfilter editor, go to Colors - Enable color grading and select Cine Cold, or open the file, go to this line and change the "X" to the corresponding letter where your Assetto Corsa is installed.
[EXT_COLOR_GRADING]
ENABLED=1
FILE=X:\Steam\steamapps\common\assettocorsa\extension\textures\color_grading\Cine_Cold.png
This is necessary to obtain the same effect as seen in the images.
As I don't have the patience to keep tweaking all those glare and godrays parameters, I borrowed these settings from the acfilter_trawa_v4 filter, which to me are pretty and well done.
Enjoy!
https://sharemods.com/4psabldfrti2/teste.ini.html