green with envy
US /ɡriːn wɪθ ˈɛn.vi/
UK /ɡriːn wɪθ ˈɛn.vi/

1.
feeling very jealous or envious of someone else's possessions, achievements, or luck
:
•
When she saw my new car, she was absolutely green with envy.
•
I was green with envy when I heard about their amazing vacation.