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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 color(self):
 """ The |ColorFormat| instance that provides access to the color settings for this line. Essentially a shortcut for ``line.fill.fore_color``. As a side-effect, accessing this property causes the line fill type to be set to ``MSO_FILL.SOLID``. If this sounds risky for your use case, use ``line.fill.type`` to non-destructively discover the existing fill type. """

        if self.fill.type != MSO_FILL.SOLID:
            self.fill.solid()
        return self.fill.fore_color