Set the given color to the provided cell

            cell

                A xls cell object

            color

                A openpyxl color var

def set_color(self, cell, color):
        """
        Set the given color to the provided cell

            cell

                A xls cell object

            color

                A openpyxl color var
        """
        cell.style = cell.style.copy(font=Font(color=Color(rgb=color)))