Script for run on this site : http://colorrun.pl/

Color run picker

function run(){
  
  function cal(rgb){
    var color = 0;
    for(var i=0 ; i<3 ; i++){
      color = color + eval(rgb[i]);
    }
    return color;
  }
  
  function pickColor(){
    var left = $('#color-1').css('background-color');
    left = left.slice(4,left.length-1).split(',');
    var right = $('#color-2').css('background-color');
    right = right.slice(4,right.length-1).split(',');
    
    if (cal(left) > cal(right)) {
      $('#color-1').click();
    } else {
      $('#color-2').click();
    }
  }
  
  $('.play').click();
  setInterval(pickColor, 100);
}