UniverseTheming.user.js

// ==UserScript==
// @name         UniverseTheming
// @namespace    http://tampermonkey.net/
// @version      0.1
// @description  try to take over the world!
// @author       You
// @match        https://rosales.dat.cespi.unlp.edu.ar/*
// @require      https://gist.githubusercontent.com/CEBracco/3840b85d881d4a536eaa0c9641dcdec9/raw/waitForKeyElements.js
// @grant        none
// ==/UserScript==

(function() {
    'use strict';

    function init(){
        $('link[href*="bootstrap.min.css"]').attr('href','http://127.0.0.1:8080/flat-bootstrap.min.css')
        $('link[href*="bootstrap-theme.min.css"]').remove()
        $('link[href*="main.css"]').after('<link rel="stylesheet" href="http://127.0.0.1:8080/bootstrap-theme.css">')
    }

    waitForKeyElements ('link[href*="bootstrap-theme.min.css"]', init);

})();

/*
.container.print-container {
    width: auto;
}

.paginator-input {
    padding: 8.5px 8px !important;
}

.table>tbody>tr:nth-of-type(odd) {
    background-color: #f9f9f9;
}
.table {
    margin-top: 15px;
    border: 1px solid #ecf0f1;
}

.table-flat>tbody>tr:nth-of-type(odd) {
    background-color: none;
    border: 1px solid #ecf0f1;
}

*/