This sounds really cool. It's something I would think that could go well with a "spring cleaning" thing, to do when the season changes.
Several years ago I ran across something called a cleansing "feast" which was basically an all vegetable/fruit diet to go on. I don't think it was liquid though. I lost track of it and have never been able to find the website. I wish I'd downloaded it.
You could blog it and then everyone could get a copy of it.