True, the saying is "green with envy". However, jealousy and envy are not the same thing. It's a common mistake.
Envy : Dammit! I want that as well! I want it, I want it, I want iiiiiiiit!
Jealousy : That's mine! Don't touch!
Google the definitions if you want accuracy.
'Jealousy' and 'Envy' usually mean the same. Although jealousy can also mean in the possessive sense, it doesn't have to.
Definition for 'Jealous' (via Google):
feeling or showing an
envious resentment of someone or their achievements, possessions, or perceived advantages.
- feeling or showing a resentful suspicion that one's partner is attracted to or involved with someone else.
- fiercely protective of one's rights or possessions
Definition for 'Envy' (via Google):
a feeling of discontented or resentful longing aroused by someone else's possessions, qualities, or luck.