Answer:
Noir(e) and Blanc(he) are examples of french words that have both feminine and masculine spellings. It depends on the gender of the noun that you are trying to describe which one you use
Step-by-step explanation:
E.g.
un chien noir (a black dog)
vs
une robe noire (a black dress)
the dress is a feminine word and therefore uses a feminine describing word, however, not all colours have different spellings.