Patterns for listing users in a "room"

I'm building a little app that lists music recommendations to users in a room. I want to list the users in the room but have a hard time finding patterns for this.

Right now it looks like this (by no means "good"):

Since I only really need to present the username, I thought I would add categorical colors (with no expertice in knowning how to pic colors that look "good" while simultaneously being distinguishable). It just doesn't look good so I was wondering: This must be a common use case, how have other pages and applications solved this? But find myself dumbfounded trying to find examples of lists of usernames in a "room".

Should I skip the colors? Thought it could be useful as a marker if I'm referring to users on other parts in the view (as a shorthand).