I wonder if it's the material that you using tranfering color to the scene. It seems to me that you got weird colors happening there. You can always go to E-on and point them to this tread in the bugs spot on E-On's site. Thing I would do first. set everything to white. Like I mean everything in the atmophere editor. Change the material. maybe use a mapped white picture texture, try it. It could be coming still from the complex procedural materials.