Dreaming of a particular colour can be difficult to interpret as how we associate with a colour is very subjective. However, white generally symbolizes purity, cleanliness, new beginnings, innocence and clarity. In Eastern cultures white can also represent grief and death. Consider what your main association with the colour white is and how that makes you feel and this may give you clues to how to interpret the dream.
Dreams of specific colours can be very subjective so to properly analyse the meaning of a dream with a strong black colour you should think