- Collection:ØRGREEN ACETATE - 100% Acetate. Mimi is a small, round shaped female acetate frame designed for wearers that value a classic shape but also look for exciting color combinations to add a twist while maintaining a traditional look. This small medium sized frame comes in 6 exciting color combinations including Purple Twirl, Elephant Grey, Milky Lavender and Brown Havana, Jade, Rose Brown.