Why Artists from Kanye West to Coldplay Are Going Blue

Check out Twitter and Facebook today and you may notice the cover and/or profile photos of musical artists from Kanye West to Madonna to Coldplay are blue. Why?

Jay Z. The rapper is launching his own music streaming service tonight, and artists started turning their social media profiles teal last night to promote the service, known as Tidal. More on the story from Newser

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