// cpt-city: os/os250k-metres (cpt)
//
// The Ordnance Survey, mapping agency of Great Britain, uses
// these schemes in its 1:250,000 maps
//
// author: UK Ordnance Survey
// copyright: Crown Copyright, released under UK Open Government Licence for Public Sector Information v1.0
// year: 2011
// url: https://phillips.shef.ac.uk/pub/cpt-city/os
#declare os250k_metres =
color_map {
  [0.00000 color rgbf <1.0000,1.0000,1.0000,0.0000>]
  [0.04539 color rgbf <1.0000,1.0000,1.0000,0.0000>]
  [0.04539 color rgbf <1.0000,0.9961,0.9333,0.0000>]
  [0.13616 color rgbf <1.0000,0.9961,0.9333,0.0000>]
  [0.13616 color rgbf <1.0000,0.9882,0.8667,0.0000>]
  [0.22693 color rgbf <1.0000,0.9882,0.8667,0.0000>]
  [0.22693 color rgbf <1.0000,0.9176,0.7647,0.0000>]
  [0.31771 color rgbf <1.0000,0.9176,0.7647,0.0000>]
  [0.31771 color rgbf <1.0000,0.8471,0.6588,0.0000>]
  [0.45387 color rgbf <1.0000,0.8471,0.6588,0.0000>]
  [0.45387 color rgbf <1.0000,0.7804,0.5725,0.0000>]
  [0.68006 color rgbf <1.0000,0.7804,0.5725,0.0000>]
  [0.68006 color rgbf <1.0000,0.7294,0.5451,0.0000>]
  [1.00000 color rgbf <1.0000,0.7294,0.5451,0.0000>]
}