If you walked down the street with a bottle of green juice five years ago, passersby may have thought you were ingesting slime. Now green is the new orange, and “wheatgrass” is a household name. So Starbucks’ move into the $50 billion health food sector should come as no surprise. Its first juice bar chain, Evolution Fresh hops on the bandwagon and into a competitive marketplace. Will their patrons make the switch? Or are they hoping to expose their brand to a whole new crowd?