.panel-heading .accordion-toggle:after {
    /* symbol for "opening" panels */
    font-family: 'Exo', sans-serif;  /* essential for enabling glyphicon */
    float: right;        /* adjust as needed */
    color: red;         /* adjust as needed */
}
/*
.panel-heading .accordion-toggle.collapsed:after {
    symbol for "collapsed" panels
    content: "<i class='fa fa-sort-up' aria-hidden='true'></i>";    adjust as needed, taken from bootstrap.css
}
*/

.panel-heading .accordion-toggle{
    background: #c9ab60;
    color: white;
    border-radius: 6px;
    opacity: 0.8;
    margin-bottom: 5px;
}