Tampermonkey nms

tampermonkey.js

// ==UserScript==
// @name         Nms account highlighter
// @namespace    http://e-price.com.pl
// @version      1.0
// @description  Set background color for allegro nms account.
// @author       Jakub Kubacki
// @match        http://ms.allegro.pl/*
// @grant        none
// ==/UserScript==
var logoutElement = document.getElementById("user-logout");
if (logoutElement) {
    var buttonContent = logoutElement.previousSibling.previousSibling.innerHTML;
    var accountName = buttonContent.replace('<strong>Zalogowany: </strong> ', '');
    var color = 'white';
    switch(accountName) {
        case 'kostiumowo_pl':
            color = '#FFBAF9';
            break;
        case 'twojestroje_pl':
            color = '#D4E3E5';
            break;
        case 'talerze24_pl':
            color = '#E2D0AE';
            break;
        default:
            color = 'white';
            break;
    }
    document.body.style.backgroundColor = color;
}