The planet Orion is actually green in colour, but it was also the 'home planet of plants' that supplied the entire universe with plants.
Green is the colour of art, and Orion is also the planet of art. It is common in space for planets that have reached a certain level of culture to accept migrants from Orion when they want to take their artistic bloom to a higher level. I found that out later when I heard about it. So they are pulled from planets all over the universe.
I later learnt that they stay on the planet for a certain period of time, and when their art has blossomed, they return to their home planet, which is like an art delivery service. In fact, they came to Earth for a limited period of time. Therefore, after a while, they are supposed to return from Earth to Orion.
It was not only the fact that it was a planet of art that caught the attention of the nine-dimensional spirits of Earth. It was also the fact that it was the 'home of plants'. The aim was to bring a lot of plants to Earth and fill the entire planet with green plants. With more plants, the amount of oxygen produced would also increase. As a result, the deep intention was to thicken the ozone layer around the Earth.
In fact, the plants brought by the Orion people increased in number all over the planet, and the ozone layer gradually thickened.
From "Gaia Dawn: How the Living, Conscious Earth Was Born".