def set_under(self, color='k', alpha=None):
        if alpha is None:
            alpha = self.alpha
        self._rgba_under = colorConverter.to_rgba(color, alpha)
Display a URL like the browser URL bar would.
dataset/ETHPy150Open yhat/ggplot/ggplot/utils/color.py/Color.set_under--crossover with--dataset/ETHPy150Open mozilla/addons-server/src/olympia/devhub/helpers.py/display_url