NEW LAW. “On June 22, 2010, a law that bans tobacco manufacturers from using the terms “light,” “low,” or “mild” in tobacco product labeling went into effect. However, some manufacturers are using color-coded packaging … and selling them to consumers who may continue to believe that these cigarettes are not as harmful as other cigarettes.”
http://www.cancer.gov/cancertopics/factsheet/Tobacco/light-cigarettes