I do hairdressing so i know which is best for who.
I personally think very dark brown hair or light blonde .. very choppy.. like emo hair but in a sweeter kind of way. With layers. If you have this it would look great to back comb your hair. If you dont know how to do this then please ask me.
Here are a few pictures of what looks good on all teens:
http://images.google.co.uk/imgres? imgurl=http://i145.photobucket.com/albums/r207/oxlilangelqtxo/hairstyles.jpg&imgrefurl=http://myhaircuts.blogspot.com/2008/09/cute-hairstyles-for-girls.html&usg=__et_smDJPMxI4FGgNaRcnTi4v7wE=&h=592&w=469&sz=58&hl=en&start=55&tbnid=yJDJbuNEqYpKMM:&tbnh=135&tbnw=107&prev=/images%3Fq%3Dchoppy%2Bteenagers%2Bhair%26start%3D54%26gbv%3D2%26ndsp%3D18%26hl%3Den%26sa%3DN
http://images.google.co.uk/images?hl=en&q=choppy+emo+hair&gbv=2
If you dont like any of these then tell me and i will find what you are looking for instantly.