Answer:
YES
No, Charlotte was very much caucasian. Her ancestry is still debated, however recent studies point to her ancestry as being from the mid to upper Iberian Peninsula and therefore not of any African descent.
Queen Charlotte is described as yellow or brown of complexion, and as having 'a true mulatto face.' Paintings by Sir Alan Ramsay, and some others, show her African looks; meaning full lips, a broad nose, and frizzled hair. Just look for her images in google. She was also depicted as a white matron. According to my Blue blood research (1100-1848) by Egmond Codfried, blue blood is Black blood: a person like Queen Charlotte with her facial traits was considered pure of noble blood, as she resembled the Moor, a symbol of Blue blood. It's a big world out there and Black researchers might have different explanations for familiar questions. This is progress.