Would be cool to have a different background you can choose depending on what you're listening. Could be different for each tabs you have. For example I have a tab dedicated to Iron Maiden, would be cool to have a specific background for that one that I could choose.
Similar to another idea I had but somewhat different.https://getmusicbee.com/forum/index.php?topic=33545.0
Would be a cool idea for a plugin if its not possible for a future patch. I wish I had programming skills.