Thunderstorm

I wondered what I was going to take a picture of when it was raining after work tonight. I got another picture of the Chevy Chase "Gotham" building with dark clouds, but then when I was crossing the parking lot I thought this perspective was more interesting. 

It is the underside of my Cirque du Soleil umbrella. I love it because of the interesting zig-zag pattern and mix of colors.