'Yellow' in the Bible

the priest shall examine the diseased place; if it appears to be deeper than the skin, with yellow, thin hair in it, the priest shall pronounce him unclean; it is a scale, it is leprosy of the head or beard.

On the seventh day the priest shall examine the diseased spot; if the scale has not spread and has no yellow hair in it, and the scale does not look deeper than the skin,

then the priest shall examine him, and if the scale has spread on the skin, the priest need not look for the yellowish hair; he is unclean.

And this is how I saw the horses and their riders in my vision: the riders had breastplates [the color] of fire and of hyacinth (sapphire blue) and of brimstone (yellow); and the heads of the horses looked like the heads of lions; and from out of their mouths came fire and smoke and brimstone (burning sulfur).