When Oprah Winfey announced that she was contributing $1 million towards the production costs of the upcoming Broadway production of The Color Purple (Winfrey starred in the movie version of Alice Walker’s acclaimed novel,) the show’s producers saw stars in the shape of dollar signs dancing before them. But while the Oprah branding (which is now prominently trumpeted in every ad for the show) has helped advance sales, it hasn’t yet turned into the fiscal windfall some expected. “Conventional wisdom is that as soon as Oprah starts plugging The Color Purple regularly on her television show, the box office will take off. But there are some red flags here that are worth waving.”