#include "colors.inc"

global_settings { hf_gray_16 }

camera {
  location -1*z
  look_at 0
}

plane {
  z, 0 hollow
  pigment {
    agate
    color_map {
      [0 color rgb .8]
      [1 color rgb 1]
    }
  }
  finish { ambient 1 diffuse 0 }
}