When I was researching the Wurttemberg related posts, I was listening to Jill Scott's music, and went about to look for some contemporary pictures of Black women with widow's peaks, and funnily enough someone had made a video of this number featuring a woman with a widow's peak. Honest, I am not making this up.
On the off chance I decided to look up the genealogy of Fleur, but she has no wikipedia entry so I had to start with her mother Diane.
Here is an example of a painting that reinforces my belief that the black servants in a number of the paintings are not actual servants but heraldic symbols. Egmond himself has changed his viewpoint to the belief some of the images even if symbolic actually allude to contemporary persons or historical personalities of that era, ie people with such complexions. For my part I have seen enough to convince me of that.