Github Docs Force Dark Mode

darkmode-github-docs.usercss.js

// ==UserScript==
// @name         Github Docs Force Dark Mode
// @namespace    http://tampermonkey.net/
// @version      0.1
// @description  Force Dark Mode
// @author       GBrayUT
// @match        https://docs.github.com/*
// @icon         data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==
// @grant        none
// @run-at       document-start
// ==/UserScript==

(function() {
    'use strict';
    document.documentElement.setAttribute('data-color-mode', 'dark');
    document.documentElement.setAttribute('data-dark-theme', 'dark');
})();