Stories We Like: A Guide to the Comma
early 14c., "lose brightness, grow pale," from Old French fader "become weak, wilt, wither," from adj. fade "pale, weak, insipid" (12c.), probably from Vulgar Latin *fatidus, some sort of blending of Latin fatuus "silly, tasteless" + vapidus "flat, flavorless." Related: Faded; fading. As a noun, from c.1300.
To depart, esp gradually (1820+)
The end of a scene, film, etc, where the picture gradually disappears (1923+ Motion picture)