moss green

from The American Heritage® Dictionary of the English Language, 5th Edition.

• noun A moderate to dark yellow, olive, or grayish green.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun A dark green colour with a tint of yellow, like that of moss.
• noun A pale greyish green color, like that of lichen.
• adjective Of a dark green colour with a tint of yellow, like that of moss.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• adjective of a moderate somewhat dull yellow-green color