Source: Tile with Philistine chief (Museum of Fine Arts-Boston) 2021 A.D.

From the source, “Faience palace tile/inlay depicting captive Philistine chief with elbows bound behind; attributes include reddish skin; small, pointed beard; white robe and headband with fabric details in red, cream, and gray; feet broken.”
This source confirms that their were people with brown skin in the ancient Middle East.