Available now in tip releases on macOS: tab colors! Right click the tab bar, select a color. This was a surprisingly popular feature request (I guess used a lot by iTerm2 users?). I'm already digging it to mark diff projects, agents, etc.
Only mouse flow for now, command palette and keyboard to come later. Also only macOS to start. We have to think about this a bit more on GTK, and it seems like this was most heavily requested on macOS so shipped it there first.
