I think it is naive to think that a cheat cannot be employed in the game. With the increasing capability of AI I would suggest it would become more likely.
My understanding is that Hitech deals with issues of this nature in private and does not advertise it.
Whilst I think it highly unlikely that players are cheating in this game, I think that because it is very niche and most have been here many years. We are a community more than just people gaming for bragging rights. However, it is not that hard to imagine a tweak to gamma and saturation levels could make certain objects pop when compared to the background. I am sure most of us have used gamma correction in the past to see in games where the night was dark and it was hard to see.