I'm looking at the drawing on the Reatig site and I don't see the horrid purple grey, orange grey, red grey match up going on here. Looking at the drawing, the building looks like it should have been more white than depressing grey.
Some of the buildings in the Reatig Shaw portfolio, I don't hate, some have grown on me, but this one. I have trouble imagining this bad color combo will ever be anything other than ugly. Maybe it is so ugly to make all the other ones look better.