Looking Up to What is Called the Sky of Tokyo City

Canon EOS 6D, Sigma 12-24mm f/4.5-5.6 IIDG HSM (24mm, f/11, 1/100 sec, ISO-100)

The first thing I need to confirm is that this is not B&W photography. This is just the sky was gray, and the buildings were dark gray.

I hit upon an idea of shooting this skyscape because the sky was well strewn with the dark thin branches. It looks complicated and gives me a feeling of pressure. This is what is called thy sky of Tokyo City.