.device-value-slider .slider-handle{
    width: 18px;
    height: 18px;
    background-color: #444;
    background-image: -webkit-linear-gradient(#444 0%, #444 100%);
    background-image: -o-linear-gradient(#444 0%, #444 100%);
    background-image: linear-gradient(#444 0%, #444 100%);
}

.device-value-slider .slider-selection {
    background: #3c8dbc;
    
}