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Google has now added colored syntax to their fetch as Googlebot tool within Google Webmaster Tools.
If you try it out by going to Google Webmaster Tools and then fetch a URL on your site, Google's results will now show you the HTML code in colored syntax, which makes it easier to read and debug.
Here is a screen shot:
Menashe Avramov was one of the first to spot this and he posted it on Google+.
Before, it was just plain black text but now it is very colorful.
Forum discussion at Google+.
