Sometimes the patterns of nature are a thing of beauty. In the early days of summer, the last of the strawberries and the first of the stone fruits take on a common motif of blushing tones. Raspberries and tayberries, which are a cross between the red raspberry and loganberry, blush with crimson ripeness, and the sweet and tart varieties of cherries come in a wide range of reds. The red currant is the first of the currants to ripen. The fruits of summer do not stay red for long before the berries and drupelets darken into purples and blacks. For a few weeks, the summer landscape is sweetly scarlet.