目の色を変える（めのいろをかえる）

Japanese vocabulary

Meaning: to be in a tizzy; to be in a frenzy; to have one's eyes light up; to have a different look in one's eyes

See it used in real works

• Example sentences from Japanese novels & web fiction (Massif)
• Hear “目の色を変える” pronounced in real videos (YouGlish)