Suggested to use this as a way to choose from select/option here

    # temporarily solution for select options
    def _select(self, match_string):
        # Cheeky Select wrapper until Marionette has its own
        # Due to the way B2G wraps the app's select box we match on text

        # Have to go back to top level to get the B2G select box wrapper
        self.marionette.switch_to_frame()

        options = self.marionette.find_elements('css selector', '#value-selector-container li')
        close_button = self.marionette.find_element('css selector', 'button.value-option-confirm')

        # Loop options until we find the match
        for li in options:
            if li.text == match_string:
                li.click()
                break

        close_button.click()

        # Now back to app
        self.marionette.switch_to_frame(self.app.frame)