// cpt-city: rc/tubepreview (PspGradient)
//
// Gradients from the graphics designers Restless Concepts
//
// author: Restless Concepts
// copyright: Free to use
// year: 2005
// url: https://phillips.shef.ac.uk/pub/cpt-city/rc
#declare tubepreview =
color_map {
  [0.00000 color rgbf <0.7333,0.6510,0.3882,0.0000>]
  [0.19995 color rgbf <1.0000,1.0000,1.0000,0.0000>]
  [0.30005 color rgbf <1.0000,1.0000,1.0000,0.0000>]
  [0.44995 color rgbf <0.0000,0.0000,0.0000,0.0000>]
  [0.55005 color rgbf <0.0000,0.0000,0.0000,0.0000>]
  [0.69995 color rgbf <1.0000,1.0000,1.0000,0.0000>]
  [0.80005 color rgbf <1.0000,1.0000,1.0000,0.0000>]
  [1.00000 color rgbf <0.7333,0.6510,0.3882,0.0000>]
}