Indigo Wild, a plant-based cosmetics company, announced that Hammond, Kennedy, Whitney and Co., an Indianapolis-based private equity firm, acquired a majority stake in the company. The deal closed on Aug. 10, and terms were not disclosed. Emily Voth, who co-founded the company with her husband out of her Kansas City home in 1996, will remain as owner and “head Zummer,” focusing on product creation, sales and marketing, and strategic growth…