<gml>
  <light name="grey"
   direction_x="0.0" direction_y ="0.0" direction_z="-1.0"
   ambient_r="0.6" ambient_g="0.6" ambient_b="0.6"
   diffuse_r="0.6" diffuse_g="0.6" diffuse_b="0.6"
   specular_r="0.6" specular_g="0.6" specular_b="0.6">
  </light>
</gml>
