code: def hex_to_rgb(hexx):
      
      h = hexx.strip('#')
      l = len(h)
  
      return tuple(int(h[i:i+l//3], 16) for i in range(0, l, l//3))
docs: Utility function to convert hex to (r,g,b) triples.
      http://ageo.co/1CFxXpO
  
      Args:
          hexx (str): A hexadecimal colour, starting with '#'.
  
      Returns:
          tuple: The equivalent RGB triple, in the range 0 to 255.