[MichaelB]

Getting all technical here in reference to "BLUE" buildings.
(just info... no arguing or judgment.)
The "blue" is the sky reflected in silver. We don't really have any blue glass buildings. Silver being just reflective gray. Gray being either warm or cool. If there is a high value (lite) cool gray reflective surface..... it reflects the sky ( just like a mirror).... which is....well, blue! It's what the same building at night seems dark because it reflects the night sky.... or has a warmer feeling if you are seeing other light reflected in it.