Ability to specify different colors for different teams
During testing of Teams app we found that users are quite often confused in regards to which team they are posting (specifically when they post to 'general' channel) - I think ability to assign different colors for different teams (by the owners/admins) would be helpful and could help to reduce amount of mistakes.
Unfortunately it was declined to decline this feature request.
Sorry to be the bearer of bad news.
Why on earth was this feature declined?
Sean Ellis commented
This is consistent with an apparent reluctance to add any options that allow users to customize their experience of using Teams.
Of course it's possible to set horrible color combinations, but that's up to the user. Basic UI principles say that the user owns their own experience.
If the user is a member of several teams, one of which is really important, then allowing them to color that team bright red is a positive, useful thing to do.
Too hard I guess to add a different color
This would be useful for channels as well I think.