i can speak as i have the diamond and now the PRO. i am coming form a 6800-6700-660-hitachi G- well , you get the point..

the only "lghts" on the diamond/pro is the circular navi button at the bottom of the phone. this has around the outer part of the circle, a thincircular light that "glows" depending on if you have received a message, missed call, when its charging, etc. there are no LED lights to annoy or brighted up the room when your trying to sleep. i have also not seen the phone "wake up" as the phones of yesteryear do (6800, 6700, etc) so you will be pleased about the lack of LED lights on this device...