Numbers 4:13
They will remove the fat-soaked ashes from the altar and spread a purple cloth over it;
Exodus 27:1-8
"And you will make the altar of acacia wood, five cubits long and five cubits wide; the altar will be square, and its height [will be] three cubits.
Exodus 39:1
And from the blue and the purple and the crimson [yarns] they made woven garments for serving in the sanctuary, and they made the holy garments that were for Aaron, as Yahweh had commanded Moses.
Exodus 39:41
the woven garments for serving in the sanctuary--the holy garments for Aaron the priest and the garments for his sons to serve as priests.
Leviticus 6:12-13
but the fire on the altar must be kept burning on it; it must not be quenched. And the priest must burn wood {every morning} on it, and he shall arrange the burnt offering on it, and he shall turn into smoke the fat portions of the fellowship offerings on it.
Numbers 4:6-9
They will put on it a covering of {fine leather}, and they will spread a cloth of perfect blue over it, and they will place its poles.
Numbers 4:11-12
Over the altar of gold they will spread a blue cloth, and they will cover it with a covering of {fine leather} and place its poles.