Hello, plz try adding the following in customizer -> additional CSS

.progress-bar {
    background: rgba(0,0,0,0.5);

}

.control .sound, .control .btnFS {
    color: #000;

}

div#ball.over-movie {
    border-color: #000!important;
}

#ball.over-movie i {
    color: #000000!important;
}