The crab apple tree swayed and creaked in each gust of wind, shaking loose its blossoms. A pink storm of petals swirled then scattered over the crosswalk in tides. They blew across the street and washed up against the curb. It's a color combination seen most often in Good & Plenty boxes or 1950s-style diners. Those petals, whipped loose on a day more like late February than April, are a sign that summer greens will soon replace the pastel pinks of spring.