ad-markers.css

.vjs-admarker {
    position: absolute;
    left: 0;
    top: 1.3em;
    opacity: 1;
    height: 4px;
    width: 7px;
    background-color: red;
    transition: opacity .2s ease;
    -webkit-transition: opacity .2s ease;
    -moz-transition: opacity .2s ease;
}


.vjs-admarker-announcer {
    position: absolute;
    left: 0;
    top: 1.3em;
    opacity: 1;
    height: 4px;
    width: 7px;
    background-color: yellow;
    transition: opacity .2s ease;
    -webkit-transition: opacity .2s ease;
    -moz-transition: opacity .2s ease;
}