I recently posted a blog post giving ACTUAL EVIDENCE RARITY IS SATANIC!

please read and give me a follow if you enjoyed my logic. Blog Post

You know, they should have made Rarity Green. We have Rainbow Dash Blue, Twilight Purple, Pinkie Pie Red(dish), Applejack Orange, and Fluttershy Yellow.

Green is the only color that isn't really represented in the mane six, and the color of envy would suit Rarity.