From having worked in the Engineering industry, I have had the opportunity to deal with LEED certification. A lot of this deals with how the building is built, from not only what materials are used, how far away they come from, how renewable they are, materials used in glues, paints, etc.
I would have a hard time saying any of those are "green" without knowing the full details. Just because the production of the product was environmentally friendly, doesn't mean any other part of it was.