Blue 1 Commonly known as Brilliant Blue FCF or E133, Blue 1 is found in beverages, dairy products, jellies, etc. as a food coloring. It can produce various shades of green according to the manufactureâ€™s wishes in conjunction with Yellow 5. It was originally derived from coal tar, but now made from an oil base such as petroleum. All dyes are considered additives by the FDA through the Federal Food, Drug, and Cosmetic Act (FD&C Act) since it is not used for the purpose of consumption, but to improve the appearance of the product. The synthetic dye does not fade as easily as other natural sources of blue dye such as indigo and is more preferred by the manufacturer. The consumption of artificial dyes has been thought to increase hyperactivity in children. It has been banned in much of Europe, but is still considered legal according to the European Union and the United States. "CSPI Urges FDA to Ban Artificial Food Dyes Linked to Behavior Problems ~ Newsroom ~ News from CSPI ~ Center for Science in the Public Interest." Center for Science in the Public Interest. Web. 16 May 2011. . "Electronic Code of Federal Regulations." GPO Home Page. Title 21. Part 74, 12 May 2011. Web. 16 May 2011. . "FD&C Blue No.1,Brilliant Blue FCF,FD&C Blue No.1 Dye,FD&C Blue No.1 Color." Food Additives, Natural Food Additives, Food Colors, Natural Food Colors. Web. 16 May 2011. . "Where does blue food dye come from?: Scientific American." Science News, Articles and Information | Scientific American. Web. 18 May 2011. .