Use color and color descriptors to show  or amplify emotion, characterization, conflict, and theme with today's color, green.  

Green is fertility and nature. 

Green is youth and inexperience.

 Green is envy and jealousy. 

Green is nature. 

Green is soothing and inviting. There's nothing scary about green. 

Green eyes are associated with magic and the power to enchant. 

There are many precious and semi precious stones, each with their own symbolic meanings. 

Things to keep in mind:

 1. Make it fit the culture, time period, setting, mood, and POV.

 2. HOW specific do your need to be and WHY? Otherwise it's pointless and annoying.