Zombie CSS - 10.9.x compatible

[Efficient_Good_5784]

One last question: 

Is there an easy way to change the white color of the play bar to green?

Greetings

I can't guarantee that this will work with the theme without causing conflicts, but try this:

Code:

/*This affects the color of the playback slider, the chapter markers on the OSD, and OSD volume bar slider.*/
div.mdl-slider-background-lower,
input.mdl-slider::-webkit-slider-thumb,
.mdl-slider::-webkit-slider-thumb,
.sliderBubbleTrack,
.sliderMarker.watched {
background-color: rgba(0,200,0,1) !important; }