Palette of 12 Secret Colors (十二秘色のパレット, Jūni Hisoku no Paretto) is a Manga authored by Nari Kusakawa.
It was published in English by CMX Manga.
The story follows Cello, a wizard-in-training, who attends a school on the tropical island of Opal, where students study to become "Palettes", or color magicians.
Cello is a poor student and often paints herself in the same bright pink color as her bird Yoyo by mistake, requiring her to visit the infirmary to restore her normal skin and hair color.
Through these trips, she gradually befriends the school doctor Guell, a grumpy but kind palette who repeatedly gets involved in Cello's misadventures, such as interfering with a group of poachers or tutoring a group of unruly children.