// cpt-city: gacruxa/mccahon/mccahon-21 (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_21 =
color_map {
  [0.00000 color rgbf <0.3137,0.2784,0.1255,0.0000>]
  [0.24512 color rgbf <0.9843,0.6667,0.3176,0.0000>]
  [0.25073 color rgbf <0.8902,0.5333,0.2549,0.0000>]
  [0.49585 color rgbf <0.9843,0.6667,0.3176,0.0000>]
  [0.50000 color rgbf <0.8784,0.4392,0.1490,0.0000>]
  [0.74097 color rgbf <0.9843,0.6667,0.3176,0.0000>]
  [0.75000 color rgbf <0.3176,0.2863,0.1412,0.0000>]
  [1.00000 color rgbf <0.3137,0.2784,0.1255,0.0000>]
}