public void setMarker(Drawable marker, int color) {
        mMarker = marker;
        mMarker.setColorFilter(color, PorterDuff.Mode.SRC_ATOP);
        initTimeline();
    }
Sets marker.

@param marker will set marker drawable to timeline
@param color  with a color
timelineview/src/main/java/com/github/vipulasri/timelineview/TimelineView.java