發青 [发－]

Jyutping faat3 ceng1
Pinyin fā qīng

Definitions (Wiktionary)
  1. verb
    to turn dark grey or green
Examples (粵典–words.hk)
  1. Cantonese
    你发青光呀，写明唔俾食烟你都喺度食烟？
    你發青光呀，寫明唔俾食煙你都喺度食煙？
    • Is there anything wrong with your eyes? Don't you see the "no smoking" sign there?