Source: NY Times:

After a few cold nights the colors come on like glowing embers. Then they burst into flame. They crackle in flickering reds, yellows and electric greens. They are beautiful and surreal against the infinite blues of a chilly October afternoon sky. Entire landscapes are transformed into a state of agitated Technicolor. It’s nature’s color-coded warning of the approaching longer nights and colder days sneaking up the calendar.

More: