That color has the capacity to affect the human mind is well known, and the affectuality of color in certain kinds of healing is a demonstrable fact.
Moses heard the people of every family wailing at the entrance to their tents. The LORD became exceedingly angry, and Moses was troubled.
The people went around gathering it, and then ground it in a hand mill or crushed it in a mortar. They cooked it in a pot or made it into loaves. And it tasted like something made with olive oil.