Simply what it says!
// ==UserScript==
// @name YouTube - turns 'Trending' into 'Paid promotions
// @description Simply what it says!
// @namespace https://youtube.com/
// @version 0.1.7
// @match https://*.youtube.com/*
// @match http://*.youtube.com/*
// @require https://cdnjs.cloudflare.com/ajax/libs/jquery/3.1.1/jquery.min.js
// ==/UserScript==
$(function() {
setTimeout(function () {
document.getElementById('appbar-guide-button').click();
setTimeout(function () {
document.getElementsByClassName('display-name')[2].innerHTML = "<span>Paid promotions</span>";
document.getElementsByClassName('yt-valign-container')[2].style.paddingLeft = "7px";
document.getElementsByClassName('yt-valign-container')[2].childNodes[1].className = "yt-sprite guide-paid-promotions-icon";
if (location.pathname == "/feed/trending") {
document.getElementsByClassName('yt-valign-container')[2].childNodes[1].style.background = "no-repeat url(//s.ytimg.com/yts/imgbin/www-videomanager-vflTyCFa9.webp) 0 -1143px";
document.getElementsByClassName('yt-valign-container')[2].childNodes[1].style.backgroundSize = "auto";
document.getElementsByClassName('yt-valign-container')[2].childNodes[1].style.width = "18px";
document.getElementsByClassName('yt-valign-container')[2].childNodes[1].style.height = "18px";
document.getElementsByTagName('title')[0].innerText = "Paid Promotions - YouTube";
} else {
document.getElementsByClassName('yt-valign-container')[2].childNodes[1].style.background = "no-repeat url(//s.ytimg.com/yts/imgbin/www-videomanager-vflTyCFa9.webp) 0 -473px";
document.getElementsByClassName('yt-valign-container')[2].childNodes[1].style.backgroundSize = "auto";
document.getElementsByClassName('yt-valign-container')[2].childNodes[1].style.width = "18px";
document.getElementsByClassName('yt-valign-container')[2].childNodes[1].style.height = "18px";
document.styleSheets[0].insertRule('.guide-item:hover .guide-paid-promotions-icon { background: no-repeat url(//s.ytimg.com/yts/imgbin/www-videomanager-vflTyCFa9.webp) 0 -1143px !important; }', document.styleSheets[0].cssRules.length);
}
document.getElementsByClassName('yt-valign-container')[2].parentElement.addEventListener("click", function() {
setTimeout(function () {
document.getElementsByClassName('yt-valign-container')[2].childNodes[1].style.background = "no-repeat url(//s.ytimg.com/yts/imgbin/www-videomanager-vflTyCFa9.webp) 0 -1143px";
document.getElementsByClassName('yt-valign-container')[2].childNodes[1].style.backgroundSize = "auto";
document.getElementsByClassName('yt-valign-container')[2].childNodes[1].style.width = "18px";
document.getElementsByClassName('yt-valign-container')[2].childNodes[1].style.height = "18px";
document.getElementsByTagName('title')[0].innerText = "Paid Promotions - YouTube";
}, 1000);
});
window.addEventListener("popstate", function () {
setTimeout(function () {
document.getElementsByClassName('yt-valign-container')[2].childNodes[1].style.background = "no-repeat url(//s.ytimg.com/yts/imgbin/www-videomanager-vflTyCFa9.webp) 0 -473px";
document.getElementsByClassName('yt-valign-container')[2].childNodes[1].style.backgroundSize = "auto";
document.getElementsByClassName('yt-valign-container')[2].childNodes[1].style.width = "18px";
document.getElementsByClassName('yt-valign-container')[2].childNodes[1].style.height = "18px";
document.styleSheets[0].insertRule('.guide-item:hover .guide-paid-promotions-icon { background: no-repeat url(//s.ytimg.com/yts/imgbin/www-videomanager-vflTyCFa9.webp) 0 -1143px !important; }', document.styleSheets[0].cssRules.length);
}, 1000);
});
document.getElementById('appbar-guide-button').click();
}, 1000);
}, 500);
});