Fun concept for zombies mode

Back in the BF3 days, a group of friends of mine made a fun version of zombies. 

Concept was pretty simple. Join an empty hardcore server that has maps that were dark i.e Metro and Tehran Highway. 

Depending on how many friends were online, the ratio of humans vs zombies was usually 10:1. 

Before the match started, humans had to split up and the zombies had to wait until everyone was ready.

Once everyone was ready and the round started, the humans could either hide alone or group up.

The twist was that humans had to turn their brightness and gamma down to the point where they could not see anything in the dark without their flashlights. 

Humans could only use pump action shotguns, no minimap, and a pistol of any choice with both weapons containing the flashlight attachment. 

Zombies could only use knives, smoke grenades, spawn beacons, and their brightness and gamma was at normal settings. 

If a human survivor died, they had to switch to a zombie and revives were not allowed. 

If you could have a portal setting to do this concept of turning ones side brightness and gamma down or just lower visibility in the dark. The map Manifest with selected and limited areas with this zombie concept will be awesome.