More Reading: Color Information Visualization: Perception for Design. Colin Ware. Morgan Kaufmann 1999. Chapter 3: Lightness, Brightness, Contrast, and Constancy Information Visualization: Perception for Design. Colin Ware. Morgan Kaufmann 1999. Chapter 4: Color Envisioning Information. Edward Tufte. Graphics Press, 1990. Chapter 5: Color and Information How Not to Lie with Visualization, Bernice E. Rogowitz and Lloyd A. Treinish, Computers In Physics 10(3) May/June 1996, pp 268-273. http://www.research.ibm.com/dx/proceedings/pravda/truevis.htm A Field Guide To Digital Color, Maureen Stone, AK Peters 2003