//  Polished metal texture
//  Requires
//    tx_refl_color
//    tx_self_color
//  Defines
//    texture_metal

#declare tx_texture = 
  texture{ 
    pigment{ color rgb tx_self_color }
    finish{
      ambient 0.1 
      diffuse 0.25 
      reflection 0.75 * ( 0.80 * tx_refl_color + < 0.20, 0.20, 0.20 > )
      specular 1 
      roughness 0.001
      metallic
    }
  }