yep. You can dload a free version, altho limited, for use. It removes the noise from pics. Its rather easy to use but can make things look unreal if over done. Do a check for it on google & get yourself a version! It's pretty cool. It can also help to bring down file size for the days when entering shots in challenges but you dont want to reduce the actually size of the pic. Give it a whirl & be sure to post a shot so we can see! Good luck!
There is some color bleeding into the girl to his left (our right). That said I'm not sure if the selective desaturation helps this photo a lot. It really really forces your attention to the boy. But I think his emotions are strong enough where they don't need anymore attention brought to them. Not only is he attention grabbing, but he's also the only one looking at the camera... in a huge crowd.
My recommendation is have this be a true black and white photo. I think it will bring out the most emotion without distraction.