L.E.

What someone doesn't know won't hurt them, but it still doesn't hurt to have some clues.

-I am a female of high school age
-My username can tell you three things about me
-I never dye my hair, but it's not a commonly seen color naturally
-The only thing that changes faster than my personality is my eye color
-One minute I'm there, the next I'm gone
-My initials are not L.E.

Good luck with the puzzle