Green
The color green is almost exclusively used in connection with plants in the Bible, and the meaning is closely connected to the meaning of plants as well. Plants, in general, represent facts, knowledge that we can gather from the world. Green plants are ones that are alive and growing. Since life represents love and goodness, it makes sense that green plants are facts that have the potential for good use. It also indicates that they are the kinds of things we learn through directly through our senses, since to identify green plants we need to actually see the greenness.
(References: Apocalypse Explained 507; Apocalypse Revealed 426; Arcana Coelestia 7691)
Leviticus 17:11-14
11
For the life of the flesh is in the blood; and I have given it to you on the altar to make atonement for your souls: for it is the blood that makes atonement by reason of the life.
12
Therefore I have said to the children of Israel, "No person among you shall eat blood, neither shall any stranger who lives as a foreigner among you eat blood."
13
"'Whatever man there is of the children of Israel, or of the strangers who live as foreigners among them, who takes in hunting any animal or bird that may be eaten; he shall pour out its blood, and cover it with dust.
14
For as to the life of all flesh, its blood is with its life: therefore I said to the children of Israel, "You shall not eat the blood of any kind of flesh; for the life of all flesh is its blood. Whoever eats it shall be cut off."
