Change CodeMirror theme to default
// ==UserScript==
// @name CodeMirror Set Theme
// @namespace http://hermanfassett.me
// @description Change CodeMirror theme to default
// @include http://www.freecodecamp.com/*
// @version 1.1
// @grant none
// ==/UserScript==
var cm = document.getElementsByClassName("CodeMirror");
for (var i = 0; i < cm.length; i++) {
cm[i].className = cm[i].className.replace(/\bcm-s-[^\s]+\b/,'cm-s-default');
}