Holographic Buildings

Well, after a while I guess you can start to hate mirrored glass whether you live in a big city or work on a prison farm with someone who wears a pair. I know this halfbaked is going to end up with a forty-story-tall Donald Trump glaring down at Manhattan, but how about replacing those boring old mirrors on modern glass office buildings with a design etched onto the glass in holographic form? Even if it was merely a slight rainbow effect or a kind of a, I don't know, a fog around the building that was made out of light, it would make the skyline more interesting. Knobby parts. A big kitten. Anything. I'm sure that people with visual arts or architecture training can think of other textures for buildings besides "mirror" or "stone." Note that I'm not talking about a whole illusionary building, merely replacing or installing 3-D holographic windows to achieve a large-scale "classy artistic" effect. I suspect the whole idea will be superceded by the already-begun fad of mounting flat television screens en masse on the outside of buildings. I'm guessing this would be a more conservative, permanent 3-D look.