Fantastic. I was searching for dark themes and accidentally found this. I've always wanted an extension to darken web pages, but didn't think it was possible honestly. I'm pretty blown away by this add on. ~No more eye searing white pages. It even seems to have fixed an annoying Linux GTK2(?) theme issue with Firefox, where input fields were all blacked out and required highlighting to view the text. THANK YOU! PS: Twitch is working fine for me; not sure what everyones on about.