Dani. I have written a piece and below is a draft link. Can you have a go and see if it works for you (all tips on what doesn't make sense gratefully received). i don't want to publish this until we know it works. Many thanks, A.

https://medium.com/@annietrevaskis/how-to-change-the-background-colour-in-your-medium-profile-15fa35f44f01