Fade to black

My office windows overlook the beautiful Mississippi River, interrupted only by the Mankato stone of the St. Paul Seminary. The seminary's oldest, turn-of-the-century buildings are beautiful and stately, but the administration building and student residence, circa 1985 or '86, have some kind of toxic-looking mold growing on them. Maybe it's from pollution or lack of sunlight on the east side of the building or whatever, but every time I look up, I see these golden stone buildings, blackening. It's a little weird because I feel like it's some kind of sign. Time for a sandblasting, I guess. In more ways than one.