'Yellow' in the Bible
the priest must examine the infection. If it appears to be deeper than the skin, and the hair in it is yellow and sparse, the priest must pronounce the person unclean. It is a scaly outbreak, a skin disease of the head or chin.
The priest will reexamine the infection on the seventh day. If the scaly outbreak has not spread and there is no yellow hair in it and it does not appear to be deeper than the skin,
the priest is to examine the person. If the scaly outbreak has spread on the skin, the priest does not need to look for yellow hair; the person is unclean.
This is how I saw the horses in my vision: The horsemen had breastplates that were fiery red, hyacinth blue, and sulfur yellow. The heads of the horses were like lions’ heads, and from their mouths came fire, smoke, and sulfur.