//  Metal texture
//  
//  Assumes defined
//  
//    metal_color
//  
//  Defines
//
//    texture_metal

#declare texture_metal = 
  texture{
    pigment{ color metal_color }
    finish{
      metallic
      ambient 0.05
      diffuse 0.25
      brilliance 6
      reflection 0.75 * ( 0.80 * metal_color + < 0.20, 0.20, 0.20 > )
      phong 0.75 phong_size 80
    }
  }