Photo Critique: Roof jumpers!

I took this shot of my teen sons who were jumping roofs! They're insane! The color of the image was so hard to see that I just tweaked it into this...I liked the sillouette effect of them all black against the blue sky. Of course the exaggerated "blue" sky. The color originally was very bland and didn't capture their presence. I like this photo because you're able to see their stance and their body form and the dark quality of it. This is the Hoover Elementary roof in Corvallis. Trouble makers!