// cpt-city: gacruxa/mccahon/mccahon-18 (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_18 =
color_map {
  [0.00000 color rgbf <0.0824,0.0235,0.0000,0.0000>]
  [0.25000 color rgbf <0.8078,0.6157,0.3961,0.0000>]
  [0.25342 color rgbf <0.9412,0.8118,0.6000,0.0000>]
  [0.50000 color rgbf <0.9608,0.6431,0.3255,0.0000>]
  [0.50684 color rgbf <0.9412,0.8118,0.6000,0.0000>]
  [0.75000 color rgbf <0.9765,0.5725,0.2627,0.0000>]
  [0.75757 color rgbf <0.9412,0.8118,0.6000,0.0000>]
  [1.00000 color rgbf <0.0824,0.0235,0.0000,0.0000>]
}