Now this is a darn cute, well-done OC! The colors work perfectly with the colors in the show, it all blends great together, and she's an herbalist? That is too cute. This is how it looks when an OC is done perfectly.
She's adorable and the mane colors are quite refreshing. The leaf accessory is a nice and creative touch. The only potential problem I see is the spots-- Not that you shouldn't have them at all, but it's a bit distracting. I think if you took the small spots on her face (not ear) away or made it a big spot over one eye like Pipsqueak she would look a bit better.