I am not sure if this is a case of art imitating life or life imitating art because many successful Black women are feeling pressured into the Ice Princess role! Successful, educated Black women are being pressured to lower their standards and date less successful and educated men. They are being told that they are single because they are too masculine, fake, or career oriented or that they have bad attitudes. Men are implying that these women need to change and that love (specifically Black love) is all we should require of a man. These men also advocate that we adopt the submissive role of letting them lead while at the same time taking the dominant role of helping them succeed.
I do think that there are Black celebrities who could be cast as Manic Pixies. A Black Manic Pixie could wear the same feminine clothing as White Manic Pixies like Zooey Deschanel (except for the ones with the rainbow hair). In films they may also take on the bohemian look. In my mind I see these characters with adorable natural hair (maybe with flowers in it, I know I'm biased), a bubbly personality (quirky and cute) with no attitude, edge, or hardness, and a job as an artist or other creative or low-stress jobs (e.g., waitress, hairdresser). I think that Black Manic Pixies would be appropriate for interracial roles because they may be very attractive to White men but less so for Black men. These are the types of women who will be accused of "dressing and acting White", they will have multicultural friends, and they won't be into hip hop music or lifestyle (they would probably listen to rock, pop, retro music, or neo soul lol).