If anyone is interested, the video from the recent Rock Row workshop (focused on the garage / residential block) is here. They're first up on the agenda so no need to skip through.
One thing they mentioned is that the vertical lines in the gray sections of the facade are a callout to the quarry heritage of Rock Row; they're meant to invoke the vertical seams seen in excavated rock .
I was thinking about the louvers on the Seaport Garage in Boston, but I didn't embarrass myself by calling in this time.Hearing them talk about why they made certain design and color decision made me appreciate this a little more. That said, they still need to do more to dress up the upper floors of the garage.