This produces a black light. I'm not quite sure what the orginal effect looked like now...
Graphics3D 800,600 SetBuffer BackBuffer() light = CreateLight() LightColor light,-255,-255,-255 TurnEntity light,0,40,0 camera = CreateCamera() PositionEntity camera,0,0,-2 s = CreateSphere() EntityColor s,128,128,128 ;CameraFogMode camera,1 ;CameraFogRange camera,-100,100 ;CameraFogColor camera,-255,0,0 While Not KeyHit(1) UpdateWorld RenderWorld Flip Wend