Totally share the love regarding container tabs.

I don't, however, like how the UI/UX is implemented. In particular, the management of containers -- why do I have to dig so deeply to add new containers? Also, as a color-blind person, the slightly colored thin bar above the tab is not a sufficient identifier. It just seems all sort of after-thoughty and jumbled to me.

Having said that, I converted to FF being my primary browser from being a long-time Chrome user and am happy about the change.