It's pretty good actually, The icon is clearly visible on any light or dark themes I have tested and it also uses the context menu design of the operating system.

The only downside - and also the reason why I'm uninstalling this again - is the lack of configuration options to set it up for my needs. I need to be able to open the list of recently closed tabs with the left mouse button, because in most cases I don't want to reopen the last closed tab. I'm not confident that I could learn to make an exception for this extension, when all others I use have to be operated with the left mouse button instead.

It's nice to be able to trigger two different actions depending on which mouse button is used, but with no way to configure the underlying action, this design decision goes against the grain of virtually all modern extensions. That's why I can only give four stars for an otherwise great and helpful tool.