Color Section Background Image issue

I am also trying to figure out how to get a bloody picture as a background using the admin options. I am using a color section but for some reason the green image behind the form is all messed up and does not stay put. I turned off the parallax and i set it to fixed but it is not working!

All I want is for the green image behind the form to stay behind the form, not scroll or move or be larger than the image actualy is.