one can instantly see that much serious thought and detail went into the design and writing of this extension, and once user gets the hang of the interface with it's default and unique custom prefs, it works extremely well (i am using Firefox 65.0.1, and running Linux Mint). AND one can actually SEE (and use) the scroll-bar & scroll buttons on every website page (UN-LIKE Dark Reader, which has a MAJOR flaw/issue with scroll). is Midnight Lizard perfect ? well, naturally it is a ever-evolving work in progress with a talented serious developer who obviously works quite hard to constantly improve on it ...so in that regard, it probably is as close to perfect, and as close to a major godsend for those of us who truly need it, as one could ever hope for. i for one am truly thankful that innovative developers (like Mr Agarkov) exist in the world ...for if not, browsing the web would frankly be a much more frustrating endeavor. Midnight Lizard actually enables one to browse the web more effectively, efficiently ...and more enjoyably. Bravo and Thank You Mr Agarkov, your hard work (and innovative Midnight Lizard) is certainly very much appreciated here ! (i will certainly be donating to this excellent extension, and hope others do too)