fade into

fade into (something)

To slowly transition from one thing to another. The golden hues of sunlight faded into pink as the sun began to set.
See also: fade
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.

fade into something

to diminish or change into something. The light of dusk faded into blackness. In the corner of the painting, the deep reds faded into lavender.
See also: fade
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs. © 2002 by The McGraw-Hill Companies, Inc.

fade into

v.
To gradually assume a new degree or quality of visibility, brightness, or color: Each scene of the movie fades into black before the next one starts.
See also: fade
The American Heritage® Dictionary of Phrasal Verbs. Copyright © 2005 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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References in classic literature ?
Across the willow-lake a temple shines, Pale, through the lotus-girdled isle of pines, And twilight listens to the drip of oars -- The coming of dark boats with scented stores Of orange seed; the mist leans from the hill, While palm leaves sway 'twixt wind and water chill, And waves of smoke like phantoms rise and fade Into a trembling tangle of green jade.
THESE girls certainly didn't Fade into the background yesterday at the screening of their new TV show.
It is in the nature of the medium to announce that something that once existed was destined to fade into nothingness--and that becomes more patent the more it distances itself from any artistic pretension.
Thus, when gravitational contraction comes to a halt, a dwarf is doomed to slowly cool and fade into oblivion.
Circling with lighted candles and chanting "fire, fire, burn," the dancers eventually fade into the background rather than exit the stage, contributing to the illusion that the ceremony will, indeed, continue for another week.