Raw Source
pta2002 / PCPartPickerGAMING 

// ==UserScript==
// @name        PCPartPickerGAMING
// @namespace   pta2002.com
// @description TURNS ON GAMING MODE!
// @include     http://pcpartpicker.com/*
// @include     http://pcpartpicker.com/
// @include     http://pcpartpicker.com
// @include     https://pcpartpicker.com/*
// @include     https://pcpartpicker.com/
// @include     https://pcpartpicker.com
// @version     1
// @grant       GM_addStyle
// ==/UserScript==

GM_addStyle('nav { background-color: #871414 !important;}');
GM_addStyle('.primary-nav>*,.nav-wrapper,.sub-links {border-right: 1px solid #5E0F0F !important;}');
GM_addStyle('.nav-wrapper {border-left: 1px solid #5E0F0F !important;}');
GM_addStyle('.nav-wrapper a:hover {background: #5E0F0F !important;}');
GM_addStyle('.secondary-nav a:hover {background: #87141 !important;}');

GM_addStyle('.drop.show.active, .search-parts.active {background-color: #5E0F0F !important}');

GM_addStyle('.btn-mds, input[type="submit"] {background: #C92E2E !important; color: white !important;}');
GM_addStyle('.btn-lgs {background: #F55D67 !important;}');
GM_addStyle('table a, .part-list-empty-tip a, .combo-price a {color: #C92E2E !important;}');

GM_addStyle('.hero {background-color: #BA5D5D !important;}');