WordPress/wp-includes/js/mediaelement/wp-mediaelement.css

.mejs-container, .mejs-embed, .mejs-embed body {
	background: #464646;
}

.mejs-controls .mejs-time-rail .mejs-time-loaded {
	background: #21759b;
}

.mejs-controls .mejs-time-rail .mejs-time-current {
	background: #d54e21;
}

.me-cannotplay {
	width: auto !important;
}