It is still color, it is not yet light.
The important thing is to remember what most impressed you and to put it on canvas as fast as possible.
The expression on my face - who on earth would be interested in that? All that I have to say is to be found in my works. (On being photographed)
And after drawing comes composition. A well-composed painting is half done
Color does not add a pleasant quality to design - it reinforces it.
The precision of naming takes away from the uniqueness of seeing.