We can't remember a season in which fashion has wrapped its arms around color like it has for Spring—and it wasn't just the designers you'd expect doing the hugging. Haider Ackermann tried teal and electric blue on for size; Aquilano.Rimondi combined poppy citrus hues; and Mr. Understatement himself, Raf Simons, served up a Crayola cocktail at Jil Sander. The best part? As Simons so cleverly demonstrated, brights look great with black.