  >>> from liblas import color
  >>> c = color.Color()
  >>> c.red
  0
  >>> c.green
  0
  >>> c.blue
  0

  >>> c = color.Color(red = 123, blue = 125, green = 124)
  >>> c.red
  123
  >>> c.green
  124
  >>> c.blue
  125


  >>> for i in c:
  ...     print(i)
  123
  124
  125

  >>> list(c)
  [123, 124, 125]
