piàn-siak變色

to change color

to change color; to discolor; to change the facial expression due to anger or fear; to change the ideology of a society or a government; to discolor and fade; to lose color

English Wiktionary, “變色” (CC BY-SA 4.0) — https://en.wiktionary.org/wiki/%E8%AE%8A%E8%89%B2 · confidence: Medium (Wiktionary, Hokkien)