No it isn't "grey". Why does it have to be "grey" because someone was shot?
It was the most important lesson in magick "be careful what you desire/wish for". If you leave the possibilities open to anything, bad things can result! This is called "backfire" and mostly occurs when you perform magick without understanding what you are using/doing.
I don't necessarily believe 100% that your spell "worked" but if it did and someone was hurt, you really need to learn to control your magick more. You're probably a natural born witch, which means you need to learn how to harness and control your thoughts.
I was like that when I was younger. I became angry at my step father (he was abusive to my mother) and in blind anger looked dead at him and said "I want you to stay away from here", it turned into a curse that caused him to stay away but at the cost of our car breaking down and then his mother's garage being broken into. Needless to say, he wasn't home for days other than to sleep and had very little of that, but I was afraid of the effect it was having on those around him. The way it was going, it didn't look good for him and my mother begged me to break it, so I did.