Exodus 27:16

and for the gate of the court there shall be a curtain of twenty cubits long, made of blue and purple and scarlet yarn and cotton thread woven with a variety of embroidery; the pillars four and their bases four.

And a veil for the door of the court, the height of it of twenty cubits of blue linen, and of purple, and spun scarlet, and of fine linen spun with the art of the embroiderer; their pillars four, and their sockets four.