Google's new design

I was browsing the web, and needed to search something so I clicked the 'Home' button to take me to google, but the page I saw wasn't the same one I've seen billions of times.

Note the differences in the logo colors, the lack of underlines on the links, and the missing 'Language Tools' link. It appeared only once, and clicking on the 'Images' link took me back to the bring old version again. Perhaps this is a 'beta' redesign of the Google homepage. I've seen other versions of it pop up occasionally as well, like the one with green bars.