The bollenhut pompom hat is part of the traditional costume of the women of the Black Forest. Red pompoms symbolise that the woman wearing the bollenhut is unmarried, whereas married women wear hats with black pompoms. But this means that older women wearing red hats were "marked".
In the series Black Forest the hat with colorful pompoms is the answer for modern, strong and independent women: neither red, nor black, but colorful. That provokes and preserves at the same time the tradition.