"Green and blue"

Green and blue
First-named of colours believe these two.
They first of colours by men were seen
This grass colour, tree colour,
Sky colour, sea colour,
Magic-named, mystic-souled, blue and green.
Later came
Small subtle colours like tongues of flame,
Small jewel colours for treasure trove,
Not fruit colour, flower colour,
Cloud colour, shower colour,
But purple, amethyst, violet and mauve.
These remain,
Two broad fair colours for our larger gain
Stretched underfoot or spreading wide on high,
Green beech colour, vine colour,
Gum colour, pine colour,
Blue of the noonday and the moonlit sky.