.panel-heading .accordion-toggle.collapsed:before {
    /* symbol for "collapsed" panels */
    height: 2.5em;
    float: left;
    content: "\e080 \00a0"; /* adjust as needed, taken from bootstrap.css */
}
.panel-heading .accordion-toggle:before {
    /* symbol for "opening" panels */
    height: 2.5em;
    font-family: 'Glyphicons Halflings'; /* essential for enabling glyphicon */
    content: "\e114 \00a0"; /* adjust as needed, taken from bootstrap.css */
    float: left; /* adjust as needed */
    color: grey; /* adjust as needed */
}
/*.panel-heading .accordion-toggle.collapsed:after {*/
    /* symbol for "collapsed" panels */
    /*content: "\e080";*/    /* adjust as needed, taken from bootstrap.css */
/*}*/
.panel-heading:hover{

    background-color:#007638;
    color:#fff;
}
.panel-heading:hover h2{
    color: #fff;
}
.panel-heading .accordion-toggle:hover{
    font-decoration:none;
    color:#fff;
}