Is Saturation toggler okay to use, or will it be detected as cheat? link.
If you want to use software which will detect your game running and increase saturation/digital vibrance accordingly, you can use VibranceGUI.
Please take a look at Anti-Cheat FAQ
What is deemed to be a cheat?
Using the following is deemed to give an unfair advantage and thus will be considered unacceptable and will result in a platform ban:
Cheats/Hacks (including skin changers)
External scripting/macros designed to gain an advantage over other players (e.g. No recoil script, …)
Use of any exploits to bypass game or Anti-Cheat protection
Attempts to debug or modify FACEIT Anti-Cheat
Use of Virtual machine or any such method to mask behaviour
The following programs/modifications are safe to use and will not trigger a ban:
Game font changes
Game config changes (.cfg)