Frog Earrings Can Anyone Help Me With The Name Of A Book?

Can anyone help me with the name of a book? - frog earrings

I remember a big book and I can not remember his name. Unfortunately, we know not remember much, but I hope someone can help.

It was a girl in front of the school, I had a best friend. Unfortunately, when she went to school, was the friend of a leader and has gained more friends, while the girl does not. The friend tried another girl get to be friends with the cheerleaders, but do not agree with them. She dyed her hair blonde, but shortly after the swim and green. She makes friends with a boy who said he should not change to be friends with someone. Green after shaving all her hair, began with ear-bat as a child, and at the end, which had become a frog to school for any reason.

I'm sorry, you do not know much about him, but he was a favorite book when I was younger, my sister and I remember that's all. If anyone knows the name that would be a great help for me. Thanks to all who know him.