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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def add_color(self, name, model, description):
 r"""Add a color that can be used throughout the document. Args ---- name: str Name to set for the color model: str The color model to use when defining the color description: str The values to use to define the color """


        if self.color is False:
            self.packages.append(Package("color"))
            self.color = True

        self.preamble.append(Command("definecolor", arguments=[name,
                                                               model,
                                                               description]))