Facebook - flip the colours into a dark mode - quick night theme - colour hue flip
// ==UserScript==
// @name Facebook - flip the colours into a dark mode - quick night theme
// @namespace english
// @description Facebook - flip the colours into a dark mode - quick night theme - colour hue flip
// @include http*://*facebook.com*
// @version 1.2
// @run-at document-end
// @grant GM_addStyle
// ==/UserScript==
// Main - Collapse the Greasy Fork Header
var style = document.createElement('style');
style.type = 'text/css';
style.innerHTML = ' html{ filter: invert(85%)hue-rotate(180deg)grayscale(60%)contrast(120%);} ';
document.getElementsByTagName('head')[0].appendChild(style);