What color of smoke from the Sistine Chapel signals that a new pope has been elected?

Colonia del Sacramento, Uruguay, lies on which river estuary? Colonists protested the Sugar Act of 1764 with the famous slogan "No taxation without" what? Which color names both the University of Alabama's "Tide" and a DC Comics masked avenger? Which color fills both blanks: W.H. Hudson's novel "___ Mansions" and Emlyn Williams's play "The Corn Is ___"? What color is the balloon in the title of the classic 1956 French short film? Office and desk workers are described by which color of collar? The male lazuli bunting, a songbird of the western U.S., has a head of which color? Under modern chess rules, which color always makes the opening move?