There could be a reason for the green, but it really doesnt make a difference overall, as it just happened to be the only one that I had to work with. Actually, this photo is one that could be interpreted in many ways, but there are only a few main ways. You got the overall idea of security, and the heart. I can say, though, that I spent about an hour setting this up, before I even got around to setting up the lighting. Almost everything in the photo has a reason and can be interpreted.

So, do you like this shot (asking anyone)? It seems to be good, if it has to be looked at several times.