Chevrons and Serrated Edges

When I look at buildings, I don't generally see "building," 

I see shapes, patterns, and colors. That certainly was true 

the other night: I happened to look up to see that the familiar 

shapes of the Chase Bank building at the bottom, 

and the Federal Court Building in the upper right corner, 

had become serrated edges against the evening sky.

The building on the southeast corner had 

acquired a deep plum and blue plaid design, 

accented with chevrons