a context shot of the glass going in at street level along Tenth (which you can see closer-up in fimiak's photo)
I noticed that the glass on the east and north sides of the south tower is only as blue as the sky on a particular day:
and in case it is not obvious, the art portion of the project, the woven pattern on the north side of the south tower, has not been installed yet, but I could just make out some sort of tracing, or metal framing, on the concrete in prep for it. think you can barely see it in the pic