when i watch videos and the screen gets dark i can see all these tiny tiny speckles on the screen it almost looks like stars cuz they are so evenly spread. Are these dead pixels? Cuz if i just look at the screen when its black i cant see them unless i focus and look for it. Are these dead pixels? Ive had dead pixels on other ipods but they were like ten times brighter and bolder so im not sure what these are.