My main feed is mixed with friend activity and jquery activity. I want friend activity highlighted.

FriendHighlight.js

// ASSUMPTION: jQuery is already loaded on the GitHub home page
// ASSUMPTION: Your username is TheDahv ;)

// JQUERY, I SUMMON YOU TO DO MY BIDDING WITH THIS HORRENDOUS ONE-LINER (FORMATTED FOR CONVENIENCE!!!)
$.get('https://github.com/TheDahv/following', 
  function (data) { 
    var members = $(data).find('.members > li').map(function(i,m) { return m.children[0].getAttribute('href').replace(/\//,""); });
    $('.news > div.alert').each(
      function(i,a) { 
        var title = a.children[0].children[0]; 
        if($.inArray(title.children[0].getAttribute('href').replace(/\//, ""), members) != -1) { 
          $(a).css('background-color', '#AFDCEC'); 
        }
    }); 
});

// TODO: Roll this into a GreaseMonkey/equivalent script
// TODO: Find a good way to generalize the username. Or just let people fork the gist and customize it themselves
// TODO: Trigger this function again when the the user requests for older feed entries.