Our Colorful Planet and our Limited Language

Green
OED:
I. With reference to colour.
1. Of a colour intermediate between blue and yellow in the spectrum; of the colour of grass, foliage, an emerald, etc.
Freq. with prefixed nouns or adjectives denoting a particular shade. apple, bottle-, dark, emerald-, grape-, grass-, lettuce, olive-, pea-, sea-green: see the first element. See also sense B. 4a.
a. Designating growing vegetation, grass, etc.

dictionary.com:
1. of the color of growing foliage, between yellow and blue in the spectrum: green leaves.
2. covered with herbage or foliage; verdant: green fields.
3. characterized by the presence of verdure.
4. made of green vegetables, as lettuce, spinach, endive, or chicory: a green salad.

Miriam-Webster: 
 1: of the color green
2a : covered by green growth or foliage <green fields>
b of winter : mild, clement
c: consisting of green plants and usually edible herbage <a green salad>
3: pleasantly alluring
4: youthful, vigorous
5: not ripened or matured <green apples>
6: fresh, new

Blue 
OED:
1. a. The name of one of the colours of the spectrum; of the colour of the sky and the deep sea; cerulean. 

dictionary.com
1. the pure color of a clear sky; the primary color between green and violet in the visible spectrum, an effect of light with a wavelength between 450 and 500 nm.
2. bluing.
3.something having a blue color: Place the blue next to the red.
4.a person who wears blue or is a member of a group characterized by some blue symbol: Tomorrow the blues will play the browns.
5. ( often initial capital letter ) a member of the Union army in the American Civil War or the army itself. Compare gray ( def. 13 ) .

Miriam-Webster: 
1: of the color blue
2 a : bluish <the blue haze of tobacco smoke>
b : discolored by or as if by bruising <blue with cold>
c : bluish gray <a blue cat>
3 a : low in spirits : melancholy
b : marked by low spirits : depressing <a blue funk> <things looked blue>

I discovered that until recently, the Japanese language combined the colors green and blue in the word "ao," which makes the color of ao an inherently natural and ecological word. Meanwhile, I could not find references to natural life in the definitions of the English color blue that extended past references for identification of the color, but all of the definitions of "green" included some form of other definition regarding plant life or a natural state. Life on Earth is made out of green and blue, and as I am more familiar with the parts of our natural planet that happen to be underwater than those that are "green life," the respective connotations of these words were unexpected to me.

Ecological
OED:
1. Biol. Of, relating to, or involving the interrelationships between living organisms and their environment. Later also: environmental; of or relating to the natural environment.

dictionary.com: (redirected to ecology)
1. the branch of biology dealing with the relations and interactions between organisms and their environment, including other organisms.

Mirriam-Webster: (also ecology)
1: a branch of science concerned with the interrelationship of organisms and their environments
2: the totality or pattern of relations between organisms and their environment

Thesaurus entry:
Definition: environmental
Synonyms: eco-friendly, green

Here "ecological" is defined as relating to the relationships between living organisms and their environemt, but not any particular organisms or any particular environment. A synonym for this word is "green." Why? Seemingly, our language has oversimplified our diverse planet and its many ecosystems. Why should the word "green" define all of nature while all of nature is simply not green?