A primitive root (identical with shachar through the idea of the duskiness of early dawn); to be dim or dark (in color) -- be black.
see HEBREW shachar
H7835. shachar
I. שָׁחַר verb be black (Late Hebrew שָׁחוֺר and derivatives, black, blackness, etc., Ecclus 25:17 Hiph`il make black; Aramaic שְׁחַר (Jastrow Dalm), Aph`el grow black, so , coal; JägerBAS ii. 295 compare Assyrian šûru, coal, šurinnu, fire-pot); — ׳שׁ, of skin Job 30:30.