Mods and cheat engine

[Caitlyn]

There's always a grey area.

- Using reshade is a mod but it really only changes hues and some graphical artifacts (aliasing, etc.). Is it a cheat?

Reshade is neither a grey area nor a mod (its a post-processing injector). Its officially allowed to use it (from 2013):

Utilizing such a tool would not violate any agreements customers have with Square Enix, and we don't plan on doing anything to restrict users from accessing it.

However, we advise that players use this at their own risk. Square Enix does not regulate the content of the aforementioned add-on and will not be responsible for any damage or losses resulting from its use.