Wednesday Wishlist: Better Use of Giant Gray Walls

Downtown is filled with several gigantic walls that could be utilized for public art, promoting downtown businesses, or even just painted a different color to look less dull. A great example is the 6 story concrete wall on the side of the San Pedro Square garage pictured below. SoFA has done a pretty good job of taking these walls and turning them into something interesting (see second photo). What would you do with this giant gray canvas?