"I wanted color, I wanted happyand a little bit of quirkiness," said Peter Som of his Resort collection for Bill Blass. The strong outing focused on the signature of the house: ladylike American dressing. For day, that meant secretary skirts with bow blouses and printed dresses with cashmere sweater coats. Evening was an exercise in simple elegance. A silver-striped gown was inspired by a Breton shirt, and a gray jersey T-shirt gown was the essence of effortless chic.