Quilting the background

I wasn't sure how the background quilting was going to work. I wanted shading but I wanted that to be subtle and I needed the background to be interesting as there is a lot of it. This is the design I've settled on. Well the selection of designs actually. I don't see me ading many more different designs as I want this to be the background and not grab too much attention but at least it's got a bit of life to it. There will be seven different threads in the upper area of the background and I think eight different ones in the lower area. You know me though, this could change before I get that far.