Hide tab text when using vertical tabs - autohide_tabstoolbar_v2.css

[Stoarr]

trafficstars

Is it possible to hide the tab text when vertical tabs are collapsed with using autohide_tabstoolbar_v2.css? Basically have it look like the standard collapsed vertical tabs? Not really a fan of having the first letter of the tab shown. Also, Is there a way to have the auto-hide feature while simultaneously having a method (button, hotkey etc.) to keep the expanded tabs open?