random color on hover

gistfile1.js

$(function(){
  $('#el').hover(function(){
    var colors = ['blue', 'green', 'yellow', 'orangle', 'purple', 'gray', 'cyan'];
    var color = colors[Math.floor(Math.random() * colors.length)];
    $(this).css('background', color);
   }, function(){
    $(this).css('background', 'transparent');
   });
});

"orangle"