The Jews traditionally used colour, "And of the blue, and purple, and scarlet, they made cloths of service..." which were to be used by the priests inside the tabernacle. Since all of the other items made from fabric for use in the tabernacle were made from fine linen it is reasonable to assume that the "cloths of service" were also made from linen.() Unfortunately, Exodus does not give the dimensions of the cloths, nor does it indicate how or when the cloths were to be used.