View Post Agencies | Brands | Campaigns | Digital JWT Canada Conducts ‘Dark Experiment’ for Tim Hortons By Erik Oster on Aug. 18, 2014 - 3:55 PM In order to launch its new dark roast, Tim Hortons teamed up with JWT Canada to put the new blend to the test. Using black-out material, the agency wrapped a L’Île-Perrot, Quebec store, blocking out any sort of natural light. C ...