The Wordnik Word of the Day for March 16, 2012 is

smaragdine
http://www.wordnik.com/words/smaragdine

(adj) Of a green color like that of smaragd—that is, of any brilliant green: an epithet used loosely and in different senses.

'Smaragdine' comes from the Greek 'smaragdos,' emerald.

Example:
"When my children ask me what is my favourite colour, I always reply smaragdine. I'm not particularly fond of emerald green, but it is one of those words you can roll around your mouth and savour like a good brandy."
--Words: smaragdine, adj., The Independent, August 18, 1998

----please, draw me a sheep----