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)
Exodus 3:14-15
14
God said to Moses, "I AM WHO I AM," and he said, "You shall tell the children of Israel this: 'I AM has sent me to you.'"
15
God said moreover to Moses, "You shall tell the children of Israel this, 'Yahweh, the God of your fathers, the God of Abraham, the God of Isaac, and the God of Jacob, has sent me to you.' This is my name forever, and this is my memorial to all generations.