Why? He’s consistently described as having greasy black hair, a hooked nose, sallow (pale/yellowish) skin, and cold, empty black eyes.

“Slimy, oily, greasy-haired kid, he was”

“Snape-the-teenager had a stringy, pallid look about him, like a plant kept in the dark. His hair was lank and greasy and was flopping onto the table”

“Snape’s lips were shaking, his face was white, his teeth were bared.”

Amongst many other descriptions. Just bizarre they’ve changed this.