Constructionism: Red
I started going a little more abstract than the idea of these being buildings, and turned them into bodies. The red being very stereotypical of blood, but mixed with the black to still give it a darker, less silly undertone. I also did some cutaways in the third and fourth in this series to bring them a little more layers to the already complicated layering of paint. Kind of a tongue in cheek, "look inside", of the bodies.