span.ar_counter.unread {
    background: red;
    border-radius: 8px 8px;
}

span.ar_counter.assigned_to_me {
    background: black;
    border-radius: 8px 8px;
}

tr.unread td.id:before {
    content: '';
    display: inline-block;
    width: 10px;
    height: 10px;
    background-color: #FF0000;
    border-radius: 50%;
    margin-right: 4px;
    margin-bottom: -1px;
    box-shadow: 1px 1px 1px rgba(0, 0, 0, 0.2);
}

tr.read td.id:before {
    content: '';
    display: inline-block;
    width: 10px;
    height: 10px;
    background-color: #000000;
    border-radius: 50%;
    margin-right: 4px;
    margin-bottom: -1px;
    box-shadow: 1px 1px 1px rgba(0, 0, 0, 0.2);
}