code: def lighten(color, ratio=0.5):
      """Creates a lighter version of a color given by an RGB triplet.
  
      This is done by mixing the original color with white using the given
      ratio. A ratio of 1.0 will yield a completely white color, a ratio
      of 0.0 will yield the original color.
      """
      red, green, blue, alpha = color
      return (
          red + (1.0 - red) * ratio,
          green + (1.0 - green) * ratio,
          blue + (1.0 - blue) * ratio,
          alpha,
      )
  
imports: from abc import ABCMeta, abstractmethod
  from math import ceil
label_desc: Use image node_id 14 for calling a global function with example usage: lighten(color, ratio) and returns: unknown,  unknown,  unknown,  alpha