I am wondering what kind of screen the Thunderbolt has. Is it plastic or glass? I'm asking because today at work I notice that at certain angles I could see colors similar to a rainbow reflected on the screen. It looked just like my brother enV Touch phone which, I believe, has a plastic screen. Also, a reflection on it does not look as clear as a reflection on glass surface. I has that plastic look. So can anyone clarified this info to me. If it's plastic, I will definitely put a screen protector to avoid any scratches but if it uses glass (or even better gorilla glass) I may think about putting a protection for the screen. Thanks in advance for all your responses .