Numbers 4:14

And they shall put upon it all the vessels with which they minister upon it, and the fire-pans, and the flesh-hooks, and the cups, and the cover, and all the vessels of the altar; and they shall put on it a blue cover of skins, and shall put in its staves; and they shall take a purple cloth, and cover the laver and its foot, and they shall put it into a blue cover of skin, and put it on bars.