// cpt-city: gacruxa/mccahon/mccahon-20 (svg)
//
// Gradients based on integer sequences and traditional Japanese
// colours, by US-based digital artist Gacruxa.
//
// author: Gacruxa
// copyright: CC BY 3.0
// year: 2014
// url: https://phillips.shef.ac.uk/pub/cpt-city/gacruxa/mccahon
#declare mccahon_20 =
color_map {
  [0.00000 color rgbf <0.4980,0.1922,0.0392,0.0000>]
  [0.23975 color rgbf <0.9373,0.7804,0.5412,0.0000>]
  [0.25000 color rgbf <0.7255,0.4000,0.1333,0.0000>]
  [0.49585 color rgbf <0.9373,0.7804,0.5412,0.0000>]
  [0.50000 color rgbf <0.6510,0.5961,0.4118,0.0000>]
  [0.74927 color rgbf <0.9373,0.7804,0.5412,0.0000>]
  [0.75000 color rgbf <0.5922,0.6196,0.5490,0.0000>]
  [1.00000 color rgbf <0.4980,0.1922,0.0392,0.0000>]
}