in Thoreau’s Journal:

It is surprising how the earth on bare south banks begins to show some greenness in its russet cheeks in this rain and fog—a precious emerald-green tinge—almost like a green mildew, the growth of the night — a green blush suffusing her cheek — heralded by twittering birds. This sight is no less interesting than the corresponding bloom & ripe blush of the fall. How encouraging to perceive again that faint tinge of green, spreading amid the russet on earth’s cheeks! I revive with Nature—her victory is mine.