Olivia Rubin once dressed all in black while struggling with postpartum depression.Courtesy of Olivia RubinOlivia Rubin is a 43-year-old fashion designer who created her own rainbow-inspired brand in 2017.In 2014, she purposefully dressed in black to blend when she was struggling with postpartum anxiety.A rainbow skirt she designed in 2017 was the start of her personal and business reawakening.This as-told-to essay is based on a conversation with Olivia Rubin.