Google Launches Themes for Gmail

Well.. Google's flagship beta(err... hmm.. ya.. for a while..or forever?) product has just got another feature(well.. you can add 31 features a month and remove 17 of them if you are in beta.. ain't it?). It is themes...(Oh and I was thinking they will get me free land line/cell calling from Gmail browser interface :D). Anyways.. I tried.. one and it looks good.. :D.. check out the screenshot below..