'Yellow' in the Bible

Though you [men] lie down between the sheepfolds, [you will be like the] wings of a dove covered in silver and its pinions in yellow gold."

And in this way I saw the horses in the vision, and those seated on them, who had fiery [red] and hyacinth-colored and sulphurous [yellow] breastplates, and the heads of the horses [were] like the heads of lions, and out of their mouths came fire and smoke and sulphur.