Order of Rainbow

na·ture n.

Yellow is the third color station and represents Nature.

Yellow

1. The material world and its phenomena.
2. The forces and processes that produce and control all the phenomena of the material world: the laws of nature.
3. The world of living things and the outdoors: the beauties of nature.
4. A primitive state of existence, untouched and uninfluenced by civilization or artificiality: couldn't tolerate city life anymore and     went back to nature.
5. Theology. Humankind's natural state as distinguished from the state of grace.

Yellow

6. A kind or sort: confidences of a personal nature.
7. The essential characteristics and qualities of a person or thing: “She was only strong and sweet and in her nature when she     was really deep in trouble” (Gertrude Stein).
8. The fundamental character or disposition of a person; temperament: “Strange natures made a brotherhood of ill” (Percy     Bysshe Shelley).

Yellow

9. The natural or real aspect of a person, place, or thing. See Synonyms at disposition.
10. The processes and functions of the body.