'Toggle between the currently active color scheme and NoColor.'

def color_toggle(self):

    if (self.color_scheme_table.active_scheme_name == 'NoColor'):
        self.color_scheme_table.set_active_scheme(self.old_scheme)
        self.Colors = self.color_scheme_table.active_colors
    else:
        self.old_scheme = self.color_scheme_table.active_scheme_name
        self.color_scheme_table.set_active_scheme('NoColor')
        self.Colors = self.color_scheme_table.active_colors
