new_contents: #!/usr/bin/env python3
  # -*- coding: utf-8 -*-
  
  # See: http://matplotlib.org/1.2.1/examples/pylab_examples/show_colormaps.html
  
  # See also:
  # - http://matplotlib.org/examples/color/colormaps_reference.html (the list of all colormaps)
  # - http://matplotlib.org/users/colormaps.html?highlight=colormap#mycarta-banding (what is the right colormap to choose for a given plot)
  
  import matplotlib.pyplot as plt
  
  # Get a list of the colormaps in matplotlib. 
  maps = sorted(plt.cm.datad)
  
  print(maps)
  
subject: Add a snippet.