The bathers are painted in varying shades of yellow ocher with odd raw sienna and pthalo blue shadows. (newamericanpaintings.wordpress.com)
However, this year archaeologist Christopher Henshilwood of the African Heritage Research Institute in Cape Town uncovered what he considers much earlier evidence of abstract thought — two pieces of ocher engraved by a South African cave dweller 77,000 years ago. (discovermagazine.com)
Conversely, the blue - green regions are converted into ocher with the coming of autumn. (scientificamerican.com)