You can do an image search on your favorite search engine and look for someone like Donna Brazile, who has been in politics for a long time and understands appearing on TV.
Then you can look at the clothes she is wearing and realize that in every photo where she is wearing a lighter dress or jacket, the automatic exposure settings of the camera adjusted for the average lighting of the scene and underexposed her face.
That is why, because Brazile has done countless TV appearances for decades ... in most of the photos you can see that she wears darker jackets or clothing.
Then you can look at the clothes she is wearing and realize that in every photo where she is wearing a lighter dress or jacket, the automatic exposure settings of the camera adjusted for the average lighting of the scene and underexposed her face.
That is why, because Brazile has done countless TV appearances for decades ... in most of the photos you can see that she wears darker jackets or clothing.