I think it is wonderful that San Antonio has an all-vegetarian restaurant (and perhaps, for that reason alone, vegetarians should support it). However, I wasn't terribly impressed with the food at Green.
My buffalo tofu wings were practically inedible (the texture was crispy and wonderful, but the sauce was a combination of extremely sour and extremely spicy - no one at my table was able to eat more than one of the wings, so we ended up throwing most of them out).
The sweet potato gnocci was good, but the tomato sauce that came with it tasted like (and had the consistency of) tomato soup.
The vegan double chocolate cake was the best part of my dinner at Green. It was moist, not overly dense, and the icing was creamy. My (non-vegan) boyfriend thought the icing tasted too much like soy margarine whipped with sugar and cocoa powder, but I liked it.