Historian:

• The Story of M&M's Brand
  Background information about M&M's candies and the color changes since they first emerged in 1941.
• Lifesavers Changes its Stripes
  News article that provides history about lifesaver candy and a flavor/color change in August of 2003.
• M&M lovers pick purple
  News release in 2002 about the selection of purple as an additional color in M&M's packages.

Food Marketing Expert:

• Color Matters: The Body: Color and Food Matters
  An article that discusses the relationship between food and color.
• Color, Color Everywhere
  This article discusses the use of color in food such as ketchup and french fries.
• Food Displays, Food Colors Affect How Much People Eat
  The results of research on how food colors affect consumption are presented in this article.
• The Influence of Assortment Structure on Perceived Variety and Consumption Quantities
  Research article on the relationship of color variety and consumption.
  

Color Psychologist:

• The Psychology of Color in Marketing
  Marketing website that explains color choice in marketing strategies.
• The Psychology of Color
  Explanations of how color affects people.
• Psychology of Color
  An article that describes how color affects mood and the relationship of color to food.
• Color: The Silent Language
  A website article about color and color theory.