There's a fight over food labels at the Supreme Court on Monday between two companies that know a little something about marketing. On one side is Pom Wonderful, owned by Lynda and Stewart Resnick, the Beverly Hills billionaires responsible for starting the pomegranate superfood craze with their juice. On the other is Coca-Cola. At issue: a pomegranate-blueberry-flavored juice produced by Coca-Cola's Minute Maid division, and alleged by Pom to carry a misleading label. All of this, as well as the name of the drink itself, have been ruled permissible under Food and Drug Administration regulations.