With the UI ingame you can change the spawn for Skinny, Skinned, Pale, Painted, Regular and Creepy on the surface.
I like to play the game like a sandbox and the interaction with the cannibals, but hate the monster spawns. With this tool I can set the monsters to 0 or set them all 0 if I want to build a bigger project without changing the game mode.

This works for any day in the game now.

Spawnrates are updated every day, if you sleep, enter a cave or press the button.

Day22SpawnChange
Skinnys only video