What was Lydia's occupation in the Bible?

Jer.46 [9] Come up, ye horses; and rage, ye chariots; and let the mighty men come forth; the Ethiopians and the Libyans, that handle the shield; and the Lydians, that handle and bend the bow. Ezek.30 [5] Ethiopia, and Libya, and Lydia, and all the mingled people, and Chub, and the men of the land that is in league, shall fall with them by the sWord. 1Mac.8 [8] And the country of India, and Media and Lydia and of the goodliest countries, which they took of him, and gave to king Eumenes: Acts.16 [14] And a certain woman named Lydia, a seller of purple, of the city of Thyatira, which worshipped God, heard us: whose heart the Lord opened, that she attended unto the things which were spoken of Paul. [40] And they went out of the prison, and entered into the house of Lydia and when they had seen the brethren, they comforted them, and departed.