Colorindo infinitamente alguma class, titulo e etc.

colority.js

var css = document.getElementsByClassName("esg-click-to-play-video");
        var y = 0;
        var x = 0;
        function colority() {
            if (css[x] != null) {
                css[x].style.background = cores[y];
            }
            x++;
            y++;
            if (y > cores.length) {
                y = 0;
            }
            if (x > css.length) {
                x = 0;
            }
            setTimeout(colority, 15);
        }
        colority();

outraversao.js

var css = document.getElementsByClassName("esg-click-to-play-video");
var y = 0;

  for (x = 0; x < css.length; x++) {

      css[x].style.backgroundColor = cores[y];
      y++;

    if(y > cores.length){
      y=0;
    }
  }