D.B.
Color blindness and what she ate for dinner - no big deal. Fake families - more of a red flag. Tells you she lies to her parents - she's testing you and challenging you to see if you will inform her parents. Her parents need to be told not just about her "fabrications" but also they need to monitor her on-line activities including Facebook.
Talk to her about the dangers of putting herself "out there" and also ask her why she feels the need to lie. See if she's looking for attention or doesn't think she's interesting enough the way she is. That's different from being a compulsive liar. In any case, her parents need to get involved.