Aptly, given my previous post, I begin with the color BLACK.
Fact is, most architects are afraid of color. There are exceptions of course (Foster, Nouvel, Rogers, and to go back, Gaudi), but I would say that most hide behind a "truth to materials" argument instead of operating in praise of pigment. Of course, a material has a color, so that is certainly a valid approach, but when was the last time you experienced a space saturated with applied (or implied) color? That wasn't created by an artist?