What a great idea. I bet something like this would do good in a stock site.
I wish I could use it as a stock photo. Unfortunately the Pentax W10 has so much noise, even at ISO 64, that I can't see much chance of getting it accepted.
The sky color is simply awesome in this photo, and the tower cranes are very detailed even as silhouettes. The composition feels a little unbalanced though. Very nice!
I think this scene had remarkable potential, but I find your composition to be rather odd. the crane on the left is somewhat unneccesary here, and the crane on the right has been cut in half. I wonder if focusing squarely on the two cranes and the sun would have been a better compositional choice.