Green tea = calorie burner?

A promotional piece for Enviga landed in my inbox today, compliments of Daily Candy. The pitch in a nutshell? Drink 3 cans of this sparkling green-tea, antioxidant-rich mix daily, and you (the average 18-35 year old) can burn up to an additional 100 calories a day. It's 5 calories a can, and has 100 mg caffeine per serving - and 200 mg of calcium, for good measure.

Me? I'm a skeptic. Green tea may be good for you, but I prefer Earl Grey, thank you very much. Besides, brew your own tea, and between getting up from your chair after boiling the water, and letting it steep, you may burn just as many calories on your own. Besides, that's a lot cheaper than paying $1.29-$1.49 per CAN for this stuff. Go figure.

Has anyone tried it? Enviga doesn't even sound good to me.

PS - When I was traveling over Easter break years ago in backpacker haven Yangshuo, China, I asked about the restaurant's "specialty." (There was, indeed, fried bamboo rat on the menu.) However, the waiter informed me that the ginger tea was the shop's "special tea." But it was pretty dang good!