How did you color the mujoco render 

https://github.com/chauncygu/Safe-Multi-Agent-Mujoco/raw/main/figures/all-mujoco.png
I am talking about this image

Looking at your repo, I could not find which code segment changed the render colors


I am trying to port MaMuJoCo to `farama/gymnaisum` (formerly `openai/gym`)

Thank you!