pointlight light1 void 0 0 0 1 1 1

lambertian red   void 1 0 0
lambertian green void 0 1 0
lambertian blue  void 0 0 1

cone c1 red    700   0 0        500 0 300       20      50
cone c2 green 1000 100 0       1000 400 500    .000001 100
cone c3 blue   600 -50 -100     300 -200 100    80      80.00000000001