Makes Invision's Inspect page scrollbars actually visible by changing to red using ::-webkit-scrollbar-thumb and !important. It inserts a style element before the first linked stylesheet.
// ==UserScript==
// @name Visible Scrollbar - Invision
// @namespace http://tampermonkey.net/
// @version 0.1
// @description Makes Invision's Inspect page scrollbars actually visible by changing to red using ::-webkit-scrollbar-thumb and !important. It inserts a style element before the first linked stylesheet.
// @author Liam Mehl
// @license GPL-3.0
// @resource license https://raw.githubusercontent.com/L-M-ICA40511/userscripts/master/LICENSE
// @match https://projects.invisionapp.com/*
// @grant GM_addStyle
// @grant GM_getValue
// @grant GM_setValue
// @run-at document-start
// ==/UserScript==
(function() {
'use strict';
var style = document.createElement("style");
style.innerHTML = "#inspect .canvas::-webkit-scrollbar-thumb{background:rgba(255, 4, 4, 0.8)!important}";
document.querySelectorAll("link[rel='stylesheet']")[0].before(style);
})();