Between the return of the beloved Spider Donut—this time with purple frosting—and an ube-flavored macchiato, Dunkin’ is getting playful with purple this season. ' title='dunkin' purple spider donut and iced purple ube macchiato'> Dunkin' | Design: Better Homes & Gardens Dunkin’ is ready for Halloween, with plenty of season-curated drinks and donuts—and even costumes for the most...