Blue Alchemy: Stories of Indigo

剧情：

BLUE ALCHEMY: Stories of Indigo is a feature-length documentary about indigo, a blue
 dye that has captured the human imagination for millennia. It is also about people who are reviving indigo in projects that are intended to improve life in their communities, preserve cultural integrity, improve the environment, and bring beauty to the world. BLUE ALCHEMY was filmed in India, Japan, Bangladesh, Mexico, El Salvador, Nigeria, and the USA.