Was a once great extension. Now I'm seeing really annoying behaviors. For one, the color of the tabs constantly change in Windows. In Linux it causes it to rapidly jump from one tab to another. I understand that this may not be entirely the developers fault. Part of it is the buggy framework Mozilla has set up for extensions, which is unfortunate. What separated Firefox from other browsers used to be my ability to customize Firefox to work the way I want to. As it stands now, other once great extensions no longer work correctly or are severely crippled. Not sure why I should continue to use Firefox over Chrome

I was really not happy to lost my session and got your "donation" page instead of it.

If tab bar move to bottom screen (use userChrome.css) and
@-moz-document url("chrome://browser/content/browser.xhtml") {
:root:not([inFullscreen]) #browser { margin-bottom: 28px; }
:root:not([inFullscreen]) #TabsToolbar { position: fixed; display: flex; bottom: 0px; width: 100%; }
#tabbrowser-tabs { flex-grow: 1; }
#tabbrowser-tabs > .tabbrowser-arrowscrollbox { width: -moz-available }
#TabsToolbar-customization-target { width: 100%; }
.toolbar-items { width: 100%; }
}
addons dont work.

I would gladly change mu one star to 5 stars once dev. changes it to work as it used to work. I want to change the tabs and nothing else, I also want different coloring on different tabs, like one for active tab, one for the others, per site coloring.
But I don't want my entire browser to change color. :(
I really hope this previously great extension can be fixed.

The"new" colourful Tabs has nothing to do with the old one, which is shown in the screenshot. Actually it only colours the actual tab-and in the same coulour nearly the whole rest of the firfox header, exept the remaining tabs. The Top line colours change each time, you choose an other tab-which is more a nerve taking lightshow, because of the shrill colours, than helpful, as it was earlier! (and as it is shown falsely in the screenshot)

No longer works with the Tree Style Tab add-on so will need to look elsewhere or go without colors.

Geht seit dem letzten Update nicht mehr, jetzt ist firefox leider farbenlos.:-(

The 11/15/2019, update killed ColorfulTabs. The color is gone! Please fix or it is useless!