Better if users can add custom text tags or categories to help sort and choose themes. The ideal behavior is that users can quickly choose a dark theme from themes with a "dark" tag or under the "dark" category without trying to enable each of them.

It works and does the job, we can switch between the installed themes quickly

works great!
May I suggest an "auto theme" switching feature? perhaps with delay options and so on? IMHO, I think that would make this extension perfect.

Either way, it's pretty handy.
:)

As a web developer this addon saves me a LOT of time going through troublesome menus while testing. Thanks a LOT! It could be one less click if clicking on the theme switcher icon opened the list of themes, instead of having to click the theme switcher icon and then the drop down menu.

Does the job