It's Warm & Natural batting. I guess it looks more pronounced in the picture from an angle. I too am thinking that I want more loft normally. I've read on a longarm site that many use two layers, a thin layer like W&N or wool and another of Hobbs 80/20. I think it would give it a flatness on the bottom layer and some loft on the top for the quilting definition.
The next quilt to get on the frame is the one in my avatar picture and I will try that.