Juliet of the Spirits (Italian: Giulietta degli spiriti) is a 1965 Italian- French fantasy comedy-drama film directed by Federico Fellini and starring Giulietta Masina, Sandra Milo, Mario Pisu, Valentina Cortese, and Valeska Gert. The film is about the visions, memories, and mysticism that help a middle-aged woman find the strength to leave her philandering husband. The film uses "caricatural types and dream situations to represent a psychic landscape." It was Fellini's first feature-length color film, but followed his use of color in The Temptation of Doctor Antonio episode in the portmanteau film Boccaccio '70 (1962). Juliet of the Spirits won the 1966 Golden Globe Award for Best Foreign Language Film. Woody Allen loosely adapted it with his 1990 film Alice.

References:
https://en.wikipedia.org/wiki/Juliet_of_the_Spirits