Not based on true events
You may expect, by its name, for an Emerald Tree Boa to be emerald. What other hue could it possibly be? Could it be pink, purple, brown, or grey? Yet Coral, a month-old Emerald Tree Boa, was red! She thought herself quite a rare beauty for her colour, quite a gem in her vibrancy, yet she was about to have a immense surprise upon that point. It was on a colder day than usual when the memorable scene occurred, a day when being lazy was the surest remedy for a reptile, at least when it was in a patch of sun. And indeed she was. Coral had twisted her lithe coils about a branch which stretched far into a patch of light, and there, with the rays glinting magnificently off her ruddy scales, she rested. Her thoughts were upon her own unique beauty. She had beheld her parents once, yet they were of the of the normal verdant hue, and she pondered her luck in being so unusual unlike them. She was born to be admired, to stand out from the others, to go down in the history of snakehood, to- but Coral's thoughts halted their journey, for she heard a rustle of a moving being. It was among the foliage in an adjacent branch quite near to hers, and grew louder as the thing within became more active. Finally, it slithered out from its cover and Coral's eyes grew as wide as double suns in her utter astonishment. It was a bright fox-red boa! It was just like she, with orange scales interspersed upon its brilliant flesh! How could it be?! Her beauty was not her own alone? There was another with the same skin as she? Coral, in her devastation, dropped her head heavily upon the bough as the other young snake slithered away to other trees. It was as ruddy red as could be, indeed, thought she, and I am not alone in my beauty.
Emerald Tree Boa
As green as leaves in adulthood and copper-hued for the first year of their life, these snakes feed upon small beasts and birds, yet are prey for carnivorous birds themselves. Emerald Tree Boas are not completely green, but have white stripes here and there along their back. They may grow up to 6 feet in length, and wrap themselves around branches in trees, watching below for potential prey which they kill by constriction. They live in South America.