No, Nigeria was a British colony. Niger, on the other hand, was a French colony.
French and British in 1776.
French Guiana
Indochina was a former French colony that had been dominated by Japanese force of arms and the French sought to reestablish control over it's former colony .
Morocco was a French colony.
Breton?
Yes Ivory Coast is a former French colony together with Burkina Faso, Niger, Togo, Benin, Senegal, Mali ...
The Republic of Guinea is not a colony; it is an independent country. It is is FORMER French colony, but it has been independent since 1958.
Mali
Yes, Madagascar was a colony of France.
Quebec and Arcadia
Mauritius, a former French colony, has a history of French influence that has resulted in the prevalence of French in the country's education system, government, and media. French is one of the official languages of Mauritius, along with English and Mauritian Creole.