Literally green:
* Emerald-hued: Emphasizes a rich, deep green color.
* Chartreuse complexion: Suggests a bright, almost yellowish green.
* Skin like moss: Creates a sense of naturalness and growth.
* Unnaturally green: Highlights that the greenness is unusual and perhaps even unsettling.
Figuratively green:
* Environmentally conscious: Describes someone who cares about the planet and takes action to protect it.
* Eco-friendly: Emphasizes their commitment to sustainable living.
* Green thumb: Suggests a talent for gardening.
* Green with envy: Indicates a feeling of jealousy or resentment.
* Green as grass: Implies inexperience or naivety.
More creatively:
* A being from the forest: Invokes a sense of mystery and connection to nature.
* A walking garden: Emphasizes a harmonious relationship with the natural world.
* A chlorophyll-powered creature: Adds a fantastical and scientific twist.
Ultimately, the best description depends on the context and the specific meaning you want to convey.