I have thought for a long while on what to call this color. It is obviously an early example, a clunker if you will. It reminds me of a dark Sea Green but it is definitely not. So, I am calling it seaweed. You can see the green pieces, like seaweed, floating in the glass. In the thick part of the glass it is not coke bottle green like Sea Green would be but has more blue in it. Are there more of them out there in your collections?