Green is the color of envy, such as the statement 'green with envy'.

Envy Salon in Jacksonville is a great place to experiment with your hair. The owner, Ashley, is a wunderkind with hair color; she gave me lowlights that softened my look, and now I feel totally ready for fall. I have long hair now but have been contemplating a pixie cut. If I decide to take the plunge, Envy will definitely be where I will go for such a drastic change. Love this place.

Envy is when you want something that someone else has and you can't have it, so you envy them.

The envy in her voice was evident.

She Envy's Me