Just added this post to idea suggestions, feel free to help me out by clicking here.

When using Spotify, you can change your profile but not the color in the background, You might have brown, blue or purple. I currently have brown as my background color, which doesn't work with my profile picture...

Spotify is known for having personalization, it would be cool if spotify users were able to change the colors behind our profiles to show more creativity by adapting this feature.

A way for this to work is clicking on the three dots 

that opens your spotify code on your profile, above or below that, you can choose what you'd like your profile color to be. It would sync just as your profile would across devices and other users could see it too. 

It's up to Spotify if it should be desktop or mobile only, I'd prefer both.