Update 20171120 19:20
I received a message from the developer stating my review was for a previous version (32). I updated to 32.1, but it is not much better. Now it changes all the tabs to white, and still colors the current tab (and menu bar, etc., which is useless). It still does nothing to help identify other tabs. I will gladly change my rating if it starts working as planned.

Original Text
ColorfulTabs always made it easier to identify tabs. Now, not only are the tabs NOT colored, they are blurred so I can't read them or find the one I'm looking for. Only the current tab is colored. It is useless. We don't need to find the current tab. And the icon that brings up a duplicate set (of colored tabs) is a wasted 'click', and is disorienting.

It used to be 5 stars. Now it is zero. Can't find anything useful about it. it's got to go!