Yesterday I picked up from my local library the coffee-table exhibition catalog that was published for the recent exhibition titled:
Frederic Remington: The Color of Night
National Gallery of Art, Washington and the Princeton Univ. Press, 2003
http://www.nga.gov/feature/remington/remington.htm
'Shortly after the turn of the century, Remington began exploring the technical and aesthetic difficulties of painting darkness.' He is known to have produced 70 nocturnal paintings in the last decade of his life (1900-1909).
Aside from a very interesting discussion of various artists who have depicted night scenes, and the difficulty of doing so, this book ends with a discussion of Remington's palette. Most intriguing to me was the discussion at the back of the book on the history of changes in the manufacture of artist colors in the 19th century, as the art market went from 'hand ground by the artist or apprentice' to the invention of collapsible tubes. The introduction of new 'synthetic' pigments, their qualities of permanence, and other such technical matters makes for a very interesting read for anyone seriously interested in the topic.