SVN diff colorizer for Gmail

gmail-svn-diff-colorize.js

// ==UserScript==
// @name          SVN Diff Colorizer for GMail (based almost wholly on Beanstalk Diff Colorizer for Gmail - http://userstyles.org/styles/14853)
// @namespace     http://userstyles.org
// @description   Adds colorization to SVN diffs received via  Could be made to work with your webmail of choice, and probably some other SVN hosts, with minimal fuss.
// @author        Matt Gillooly
// @modifiedBy    2012-10-21 Amit Gupta
// @include       http://mail.google.com/*
// @include       https://mail.google.com/*
// @include       http://*.mail.google.com/*
// @include       https://*.mail.google.com/*
// ==/UserScript==
(function() {
    var css = "ins { background-color: #cfc; text-decoration: none; display:block; }\n\n  del { background-color: #fcc; text-decoration: none; display:block; }\n\n  .gs pre { font-size:1.2em; }";
if (typeof GM_addStyle != "undefined") {
        GM_addStyle(css);
} else if (typeof PRO_addStyle != "undefined") {
        PRO_addStyle(css);
} else if (typeof addStyle != "undefined") {
        addStyle(css);
} else {
        var heads = document.getElementsByTagName("head");
        if (heads.length > 0) {
                var node = document.createElement("style");
                node.type = "text/css";
                node.appendChild(document.createTextNode(css));
                heads[0].appendChild(node);
        }
}
})();