Islamic Interpretation of Dreams (Ibn-i Sirin):

In a dream, a leather finisher or a fabric dyer represents a false person, though he also could do good.

A dyer in a dream also represents someone of good financial standing or one who is in position to help others, or he could be a man of knowledge, or a person in authority.

Seeing a dyer dying a white garment into a green color in a dream means repentance from sins.

If he changes the dye of a white garment into black, it means apostasy.

If one sees a dyer in his house receiving or taking garments to dye in a dream, he represents an adulterer and means that someone in that house may die in that year.