Tired of hearing that question when you share a screenshot or a tutorial on YouTube? Your problems are over! :)
Introducing "Which Theme is That" Visual Studio Code extension.
This extension will show on the status bar your workspace's current theme name and font.
Grab it here: https://marketplace.visualstudio.com/items?itemName=sjardim.whichthemeisthat
Install the extension and run the Command Palette Ctrl+Shift+P or Cmd+Shift+P on Mac. Search for "Which Theme is That?" and hit Enter.
The extension will run only on the currently opened window and will deactivate once it's closed. This was intentional as the idea was just to use it when recording a tutorial or taking screenshots as the theme and font names may take too much space on your status bar, and hide more useful information during development.
Tip: If you change the theme and/or font during a tutorial, the extension will automatically update it on the status bar.
Enjoy!