Thanks Arch. The wall behind is red. I have a large round softbox as the key light, which is off to our right, and another strobe at a 45 degree angle behind her to our right, defining the edge. The left side has a 24" reflector resting on a chair, to add a small amount of fill. Also on the chair is another strobe, pointed at the background just adding a splash of light. I added soft vignetting in photoshop, as I do to most of my photos, which gives the background light more of a spotlight feel. I do plan to get a honeycomb grid someday soon, so I can focus the background light more.