this is my site sign at the house & studio of luis barragán. it's like the bean in chicago except a sphere with type on it. the black type is just sculptural or engraved and is not actually black. the pink is also engraved but painted pink.

from a barragan blog entry:
notice the mercury glass ball in this room and the room below. there are reflective balls like these in many rooms. the story is that they were positioned so that barragan, when seated in his favorite place in the room, could see what was going on behind and all around him. in the dining room, two of the spheres provided him with views of the backs of his guests and allowed him to monitor them for amorous activities.