Greenosity

A noun form of an adjective meaning "having, full of, or characterized by" green.

• Green is the color of nature.
• Green symbolizes growth, harmony, freshness, and fertility.
• Green has strong emotional correspondence with safety.
• Green has great healing power. It is the most restful color for the human eye; it can improve vision.
• Green suggests stability and endurance.
• In heraldry, green indicates growth and hope.

Yeah, whatever...
In reality:

• I wanted a unique domain name.
• I like the color green.