compatibility.user.js

// ==UserScript==
// @name        Compatibility Mode
// @namespace   https://gist.github.com/fgrsnau
// @version     1
// @grant       none
// @include     *
// ==/UserScript==

css = 'img { display: none !important; } * { background-color: white !important; color: black !important; background-image: none !important; } svg { display: none !important; }';

head = document.getElementsByTagName('head')[0];
style = document.createElement('style');
style.type = 'text/css';
style.innerHTML = css;
head.appendChild(style);