The Doc has been posting about the various colours in barks, leaves and flowers. However, the absence of colour has also been revealed. One bark, that of Corypha utan (Gebang Palm), is the most boring and colourless of any The Doc has photographed. The outside of the tree is just shades of grey from dark to light grey, with almost zero colour. No The Doc did not desaturate the image, even if it looks like it.