I went to the new REI prototype store.  Eco-prototype.  I'm not sure about the details but I read that it's remarkable somehow (in a lot of ways).  Frankly, I preferred the feel of the other store better but I respect the change.  These solar light fixtures fascinated.  They are under openings in the ceiling so they are skylights but there is a stick of light hanging down inside, probably for night time.  The covering fabric reminded me of Denver International Airport tents.