Hey @Wiz_GO, you can already do part of this today.
In the Agents Window, right-click a chat in the sidebar and choose Edit Icon. You can give each chat its own icon and color, which makes parallel agents easier to tell apart at a glance.
The color appears in the chat row in the sidebar, not as a background for the conversation itself. Coloring the whole chat isn’t available yet, and you may want to join an existing thread instead of creating a new one.
If a color you pick on a local chat doesn’t stick, a fix for that is coming in an upcoming update.