// new in POV-Ray 3.7
  triangular //max.6 colors/textures 
  color Red,
  color rgb<1.0, 0.4, 0.0>,
  color rgb<1.0, 0.9, 0.0>,
  color rgb<0.5, 1.0, 0.0>,
  color rgb<0.5, 0.5, 1.0>,
  color rgb<0.5, 0.0, 1.0> 
  // rotate<-90,0,0>