text: """Showcases colour rendition charts computations."""
  
  import numpy as np
  from pprint import pprint
  
  import colour
  from colour.utilities import message_box
  
  message_box("Colour Rendition Charts Computations")
  
  message_box("Colour rendition charts chromaticity coordinates dataset.")
  pprint(sorted(colour.CCS_COLOURCHECKERS.keys()))
  
  print("\n")
  
  message_box("Colour rendition charts spectral distributions dataset.")
  pprint(colour.SDS_COLOURCHECKERS.keys())
  
  print("\n")
  
  message_box(
      '"ColorChecker 2005" colour rendition chart chromaticity coordinates data:\n\n'
      '\t("Patch Number", "Patch Name", "xyY")'
  )
  name, data, illuminant = colour.CCS_COLOURCHECKERS["ColorChecker 2005"]
  for name, xyY in data.items():
      print(name, xyY)
  
  print("\n")
  
  message_box(
      'Converting the "ColorChecker 2005" colour rendition chart "CIE xyY" '
      'colourspace values to "sRGB" colourspace "RGB" values:\n\n'
      '\t("Patch Name", ["R", "G", "B"])'
  )
  for name, xyY in data.items():
      RGB = colour.XYZ_to_RGB(
          colour.xyY_to_XYZ(xyY),
          illuminant,
          colour.CCS_ILLUMINANTS["CIE 1931 2 Degree Standard Observer"]["D65"],
          colour.RGB_COLOURSPACES["sRGB"].matrix_XYZ_to_RGB,
          "Bradford",
          colour.RGB_COLOURSPACES["sRGB"].cctf_encoding,
      )
  
      RGB = [int(round(x * 255)) if x >= 0 else 0 for x in np.ravel(RGB)]
      print(f'"{name}": {RGB}')
  