Most taxa have white cheeks and ear-coverts, but these are black in "albiventer", "purpurascens" and "melanogenis".
en.wikipedia.org These may include movement of the eyebrows, the cheeks, the nose, the head, the torso, and the eyes.
en.wikipedia.org The upper cheeks and ear-coverts are black; there are white bars on the wings, a black, recurved crest over the forehead, and pink feet.
en.wikipedia.org Affected children may show red cheeks and nose, red (erythematous) lips, loss of hair, teeth, and nails, transient rashes, hypotonia and photophobia.
en.wikipedia.org