This extension is very good
Coloring in the toolbar is very pleasing as a part of the internet experience
Also, this extension principle of least privilege, symply that it only has permissions for tabs, and not to "Access your data for all websites," so this reduces the extensions footprint and makes it more trustworthy
:)
Great addition to containers, great extension

After doing a rare update(rare for me for me because I hate the surprise changes to my stuff), I lost the Tool Bar reverse coloring I've had for years. I no longer remember how I did it, and found this add-on gave that it to me right away. I wish I could add a bit more contrast as the only fault.

Still issue with non-containered tab, fallback to dark mode. Also coloring is darker than on _Container Color Theme_ by Sean Hugo extension

The colouring works really great, does sometimes take a second or two between switching tabs for it to colour correctly.
That is not the reason I gave it 2 stars, the reason is that everything except the toolbar keeps being white, like if you had the white theme on (I don't).

Almost perfect ... I wish it didn't default to a black theme for tabs with out containers.

Love it, but it looks like it stopped working correctly w/ FF 70.0

UPDATE 2022-10-25: Now working with latest FF, but on Linux, it switches to "Light Mode" (from "Dark Mode") whenever I switch tabs. Had to disable. :(

This add-on is absolutely essential! It makes it extremely clear which Firefox Multi-Account Container I am currently operating inside of. This is the second thing I install on a new Firefox. Thank you for making this!