Review for Colored Folders by dead_art
Rated 2 out of 5 stars
In my case the addon is in German, though on the screenshots on this site I've seen it in English and the description is in English as well. So, the addon makes some arbitrary language choice by itself, and the user can not do anything about it. At least I haven't found any settings for it neither in English or in German or else. That's odd, wierd and sad.
To create your own collections, you must have a Mozilla Add-ons account.