Changes color in specified selector on sites including a specific URL
// ==UserScript==
// @name Change Color in Selector
// @namespace your-namespace
// @version 1.0
// @description Changes color in specified selector on sites including a specific URL
// @match *://vanced-youtube.neocities.org/2015/*
// @run-at document-end
// @grant GM_addStyle
// @license MIT
// ==/UserScript==
(function() {
'use strict';
// Add custom CSS to change color
GM_addStyle('.gsc-tabHeader.gsc-inline-block.gsc-tabhActiv { color: #dd4b39 !important; }');
})();