It's good, but it's a bit laggy. Just like Dark reader: It has an impact on browser's performance.

I was skeptical when a recent update required all-site permissions, and it turns out the extension has now been suspended for violating Mozilla's policy. While I'm not sure why the developer made that choice, it is truly unfortunate.
Could they have been unauthorizedly misusing user data? Personally, I don't believe full website access is necessary just to change themes. It actually functioned perfectly well without those privileges in the past.
Either way, it's a pity that we've lost yet another wonderful extension.

Changes all tabs to be the same colour, I had hoped they'd be different colours, to match their web-page, maiking it easier at a glance to click on the tab I was looking for. Otherwise works well enough, though I do think UX design is worsened by the inability to tell where the content starts and the toolbar ends.

- The UI refresh causes Ctrl+TAB to be much slower, due to the "adaptive" behavior
- The Options page has a lot of controls, but no explanation and seemingly no effect.
- I installed this to get a black vertical tab bar, nothing else. There is no option.

The Firefox themes also don't work to get a dark tab bar: they put the page also in dark mode. I just want the vertical tab bar to seemingly merge with the frame of my laptop..

This is good for Linux nerds that keep configurating and never do anything productive with their OS :-P

Not very good extension. Its remove borders between headers and all another page and it looks uncomfortable for me, because some pages turns into simple colorful smudge. ColorfulTab has much better work and customization.

Does not work with automaticDark, theme still changes based on tab color.

go to "about:config" type "widget.windows.mica" and enjoy the beauty of the already intigrated feature of a true "adaptive tab bar color" that wont be consistently changing your firefox theme and bugging out your operating systems window manager

and btw
:P keep up the work, no true hatred towards you, only respect, im just butthurt.
i still have this installed on my nightly firefox, so hopefully ill come back to change this review, have a great day, thanks

Edit:
- sorry, i think the star rating i put earlier was too harsh... (ill return soon)

this also change to font of firefox color wish there is a toggle to change the way it work(i may be blind and didn't see it), I will come back and use it if this get added and give 5 star, still kudo to the dev

isn't compatible with dark reader, anything else is perfectly fine just not working with dark reader

Looks like a cool extension, but what disappointed me is poor customization accessibility (I'm using Windows 10, if that matters). Color picker is working on Windows provided native color picking GUI, so it's very inconvenient when you want to change custom colors for specific websites. I also tried HEX color code system, but nothing worked. Hope you will implement this simple color code system one day - it's far better and handy than HUE/SAT/LUM.