jellyfin-web/dashboard-ui/bower_components/emby-webcomponents/indicators/indicators.css

.itemProgressBar {
    background: rgba(0,0,0,.5);
    position: relative;
}

.itemProgressBarForeground {
    position: absolute;
    top: 0;
    left: 0;
    bottom: 0;
    background-color: #52B54B;
}

.timerIndicator {
    color: #CB272A;
}