Complex sentence: However, in late 2013, a design change was made that downsized the building to a building with either 47,50, or 51 stories, and a modified beige facade, as well as a flat roof.
Split into simpler sentences: However, in late 2013, a design change was made that downsized the building to a building. Also, the building would have had a modified beige facade, as well as a flat roof.