Why isn't there a feminine word for orange in french?

Answer 1

as an adjective, orange is both masculine and feminine ; the masculine and the feminine versions have the same spelling.

As a noun for the fruit, 'une orange' is a feminine noun.

Answer 2

French grammar rules dictate that colors are invariable, meaning they do not change based on the gender of the noun they are describing. Therefore, the word "orange" remains the same, whether referring to a masculine or feminine noun.