I am truly tempted to put this in the conspiracy area but they seem to have the technical know-how about the matter. They claim there's a difference in the photo but I can't see it. They go on to explain:
In what will likely be yet another story explained away as conspiracy by the media, we see even more evidence the media is doing everything in its power to help Hillary Clinton. In this case it appears they are using soft, “angelic” camera filters for Hillary Clinton’s side of the debate stage while leaving Donald Trump’s image a cold white.
Check it out for yourselves @ BUSTED! Debate Camera Crew Caught Rigging Hillary’s Appearance Using Camera Filters, No Filters for Trump (VIDEO)