Purple/Red/Brown Leaf Honey Locust!

I was on campus today and for the first time I noticed this strange purple/red tree.  I was honestly shocked because it looked like a locust but I had never seen one this colour before.  I got up closer and realized that it was a locust.  There was even a tag on the trunk that confirmed this, as the UWO campus is also an arboretum.  I couldn't find any images when I tried searching for it on google.  There is a plant called a Purple Robe Locust but the foliage is green and the flowers are purple.  This is truly an amazing tree!