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)

4985. 'And Joseph was beautiful in form' means the good of life springing from this, 'and beautiful in appearance' means the truth of faith springing from it. This is clear from the meaning of 'beautiful in form and beautiful in appearance', for 'the form' is the essence of a thing, whereas 'the appearance' is the outward manifestation derived from it. And since good is the actual essence and truth is the outward manifestation springing from it, 'beautiful in form' means the good of life and 'beautiful in appearance' the truth of faith. For the good of life is a person's essential being (esse) since it resides in his will, while the truth of faith is the manifestation of it since it inhabits his understanding. Indeed whatever inhabits the understanding is a manifestation of something that originates in the will. The essential being (esse) constituting a person's life resides in the intentions of his will, and the manifestation (existere) of his life resides in the thoughts of his understanding. A person's understanding is nothing else than an unfolding of his will, also the imparting of a form to it that enables its true nature to be seen in an outward appearance.

[2] From this one may see where the beauty - the beauty of the interior man - comes from. That is, it comes from the good present in the will by way of the truth of faith. The truth of faith presents that beauty in an outward form, but the good in the will is the supplier of that beauty and the producer of the outward form. Here is the reason for the indescribable beauty of the angels of heaven, for each is so to speak love and charity embodied in a form. When therefore anyone sees them in their beauty his deepest feelings are stirred. For the good of love received from the Lord shines forth from them through the truth of faith, enters into him, and stirs those feelings within him. From this, as also in 3821, one may see what is meant in the internal sense by 'beautiful in form and beautiful in appearance.