Answer:
Found this off of google: "Historically, serpents and snakes represent fertility or a creative life force. As snakes shed their skin through sloughing, they are symbols of rebirth, transformation, immortality, and healing. The ouroboros is a symbol of eternity and continual renewal of life."
I believe the answer to your question is the color green but it is probably wrong.
Hope this helps!
Have a great day/night and stay safe!
