Hey, I'm only 18 months late on this thread but here goes...
At the Univ. of Arizona they had a beautiful coat of arms painted on the wall that was visible as soon as you walked into the chapter house. I first saw it in 1996 when my big brother and I were there for a UTEP/U of A football game, then again 3 weeks later when we returned for Watermelon Bust. In 1999 we returned for another UTEP/U of A football game and it was still there -- unfortunately the chapter was in bad shape and was later removed.
The house also had letters painted on a wall outside. I figure all of that has been painted over by now.