Popslide PRO is the best way to make your Popslide even cooler! Here are its features.
Why would you need such option? In case you change the Popslide content you want your visitors to react to this content immediately, not after a month! By changing the cookie to something else they will see the Popslide again, even if they saw it yesterday.
Better color picker
But there is also a better color picker which will allow you to set a transparency for Popslide background, font, and close button.