Traces of color blue indigo on 34,000-year-old tools from Dzudzuana Cave reveal that early humans processed plants for dye ...

CLEVELAND - AkzoNobel, the world's largest paint and coatings company, unveiled today its 2013 Color of the Year, Indigo Night. The rich blue shade was determined by the company through a study of ...

I n a recent study about ancient ancestors, archaeologists elaborated on the earliest evidence of indigo dyeing, showing that ...