so i`ve never used the unibody macbooks before and i`m curious about the illuminated keyboard: 1. do the icon on the F5 and F6 keys represent toggling of the illuminated keyboard? if so, is it simply on and off, or can you turn up the light like you can turn up brightness of the screen? 2. what color is the light for the illuminated keyboard? is it white or is it bluish white? i`ve seen images of both but can`t figure out what it is.