The entire page will be fading to dark, so you can watch the video as if you were in the cinema.
Changes the Location Bar of Firefox into a Breadcrumb display with rich and interactive features.
The "NewScrollbars"-extension replaces the default scrollbars of Firefox and Thunderbird with colorized ones (partly) known from "Noia themes".
Shows source comments for advanced application preferences in about:config
When scrolling vertically, shows a percentage indicator displaying how far down has been scrolled on the page.