The green looks strange, curious what material that will be.
The 28' floor to ceiling height is confusing/concerning, you could probably almost do 3 levels of parking(9' floor to floor is a bit tight, especially with fireproofing). It appears to be handled a bit better on the 20th street side than on 19th, but it is basically a 1 story blank wall/strip mall signage parapet. The super tall 1st bank windows in the render remind me of the bizarre out of scale feeling you get in Towne Centeres, at Southlands they put wrapping paper on the upper 15 feet of windows that are above the drop ceiling. I guess it will all come down to materials and detailing, the proportions just seem awkward.
I tried to think of spaces to compare it to, I am imagining the Ikea parking garage and the downtown Portland Safeway, which I remember as being pretty tall.
Just to be clear, I am excited for that part of town to get a grocery store and I hope it turns out better than I am envisioning. Does a grocery store outweigh bad architecture/poor urban form(no balconies or windows or "eyes on the street" for the first 30 feet). In this case probably so, in the long term I don't know, I guess it beats 6 stories of parking at the Spire. I hope some of Ken's info is wrong, I guess worst case a 28ft parking garage would make good overflow convention space.