Accordion with background change on panel-heading on click

Hi I am using Bootstrap-3 and I need to change the background-color of class .panel-heading to any other color.

When I click on accordion the background color of that particular accordion should be changed..

Here is the code with solution.=>

CSS ==>

 
    .panel-group .panel {
        border-radius: 0;
        box-shadow: none;
        border-color: #EEEEEE;
    }

    .panel-default > .panel-heading {
        padding: 0;
        border-radius: 0;
        color: #212121;
        background-color: #FAFAFA;
        border-color: #EEEEEE;
    }

    .panel-title {
        font-size: 14px;
    }

    .panel-title > a {
        display: block;
        padding: 15px;
        text-decoration: none;
    }

    .more-less {
        float: right;
        color: #212121;
    }

    .panel-default > .panel-heading + .panel-collapse > .panel-body {
        border-top-color: #EEEEEE;
    }

/* ----- v CAN BE DELETED v ----- */
body {
    background-color: #26a69a;
}

.demo {
    padding-top: 60px;
    padding-bottom: 60px;
}

.highlight{background: #ff0 !important; transition: 2s ease all;}

HTML==>

<!DOCTYPE html>

<html lang="en">
<head>
<title>Bootstrap Example</title>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css">
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.3.1/jquery.js"></script>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/js/bootstrap.js"></script>
</head>

<body>
<div class="container demo">
<div class="panel-group" id="accordion" role="tablist" aria-multiselectable="true">
<div class="panel panel-default">
<div class="panel-heading" role="tab" id="headingOne">
<h4 class="panel-title">
<a role="button" data-toggle="collapse" data-parent="#accordion" href="#collapseOne" aria-expanded="true" aria-controls="collapseOne">
<i class="more-less glyphicon glyphicon-plus"></i>
Collapsible Group Item #1
</a>
</h4>
</div>
<div id="collapseOne" class="panel-collapse collapse" role="tabpanel" aria-labelledby="headingOne">
<div class="panel-body">
Anim pariatur cliche reprehenderit, enim eiusmod high life accusamus terry richardson ad squid. 3 wolf moon officia aute, non cupidatat skateboard dolor brunch.
</div>
</div>
</div>

<div class="panel panel-default">
<div class="panel-heading" role="tab" id="headingTwo">
<h4 class="panel-title">
<a class="collapsed" role="button" data-toggle="collapse" data-parent="#accordion" href="#collapseTwo" aria-expanded="false" aria-controls="collapseTwo">
<i class="more-less glyphicon glyphicon-plus"></i>
Collapsible Group Item #2
</a>
</h4>
</div>

<div id="collapseTwo" class="panel-collapse collapse" role="tabpanel" aria-labelledby="headingTwo">
<div class="panel-body">

Anim pariatur cliche reprehenderit, enim eiusmod high life accusamus terry richardson ad squid. 3 wolf moon officia aute, non cupidatat skateboard dolor brunch.
</div>
</div>
</div>
<div class="panel panel-default">
<div class="panel-heading" role="tab" id="headingThree">
<h4 class="panel-title">
<a class="collapsed" role="button" data-toggle="collapse" data-parent="#accordion" href="#collapseThree" aria-expanded="false" aria-controls="collapseThree">
<i class="more-less glyphicon glyphicon-plus"></i>
Collapsible Group Item #3
</a>
</h4>
</div>

<div id="collapseThree" class="panel-collapse collapse" role="tabpanel" aria-labelledby="headingThree">
<div class="panel-body">
Anim pariatur cliche reprehenderit, enim eiusmod high life accusamus terry richardson ad squid. 3 wolf moon officia aute, non cupidatat skateboard dolor brunch.
</div>
</div>
</div>
</div>
</div>
</body>
</html>

JS ==>

<script> 

function toggleIcon(e) {
    $(e.target)
        .prev('.panel-heading')
        .find(".more-less")
        .toggleClass('glyphicon-plus glyphicon-minus');

        $(e.target)
        .prev('.panel-heading')
        .toggleClass('highlight');
        console.log()


}

$('.panel-group').on('hidden.bs.collapse', toggleIcon);
$('.panel-group').on('shown.bs.collapse', toggleIcon);
//$('panel-heading').addClass("highlight");

===========OR===================

$('.panel').on('hidden.bs.collapse', toggleIcon);
$('.panel').on('shown.bs.collapse', toggleIcon);


</script>

CodeKhel