I'm using Lightflow with the S4 and finally have it working, but trying to get the purple color to show up has not worked. It still defaults to blue. I have turned off stock messaging notifications since I use handcent I am not sure I want handcent LED notifications on or off. I think on since if it off it will not send the notification, but even then if I set the color there it does not talk right with lightflow.. I have Facebook notifications in blue, but I guess I can make those purple and see how that turns out.