Mrs. Black in French is Madame Black, abbreviated Mme. Black. Note that one does not translate the surname, Black. The common noun black is "noir" in French, but one would never address this woman as Madame Noir.
It depends on the "Mrs." you are addressing. I could be either Madam or another variety of "Mrs."
In French, "Mrs. Kelly" is translated as "Madame Kelly." "Madame" is the formal term used to address women, similar to "Mrs." in English.
In French, "Mrs. Jones" is translated as "Madame Jones." The term "Madame" is used to address a married or older woman, similar to "Mrs." in English.
Black gloves are 'des gants noirs' in French.
pitch black is translated 'nuit noire' in French.
bonjour madame Knight
bonjour, madame Ann.
Black bear in French is "ours noir."
Je m'appelle madame Mason
in French, black beauty is 'beauté noire'
Le chien noir.
A beautifu black butterfly is "un beau papillon noir" in French.