The traders name was Lydia.
Lydia, a wealthy woman from Thyatira, was a seller of purple cloth mentioned in the book of Acts. She was one of the first people in Philippi to convert to Christianity after hearing the teachings of the apostle Paul.
From what I've read in the scriptures, there is no mention of purple meaning royalty; but as you know or may find out, in the places where kingdoms exist , purple is a sign of wealth and royalty.
She was the first European converted to Christ under the preaching of Paul at Philippi (Acts 16:14). As a "seller of purple," she was probably quite wealthy (Acts 16:12-15,50).
If you mean what does purple mean in the Bible, I believe I can answer your question. Purple as a color in the Bible represents wealth or royalty. If someone were a seller of purple cloth it would mean that they are well off financially because of who they are selling it to.
She was a trader of dyes, particularly purple, and her name was Lydia.(Acts 16:14)
There is none in the bible as described having purple hair, however, Lydia in Acts 16:14 was a dealer in purplecloth.
Acts 16:14 - Now a certain woman named Lydiaheard us. She was a seller of purple from the city of Thyatira, who worshiped God. The Lord opened her heart to heed the things spoken by Paul. [NKJV]
Lydia is mentioned as a seller of expensive textiles: 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.
(Acts 16:14, 15) 14 And a woman named Lydʹi·a, a seller of purple from the city of Thy·a·tiʹra and a worshipper of God, was listening, and Jehovah opened her heart wide to pay attention to the things Paul was saying. 15 Now when she and her household got baptized, she urged us: "If you have considered me to be faithful to Jehovah, come and stay at my house." And she just made us come.
Lydia , (Acts) was a business woman who spun expensive purple cloth
In Acts 16:14,15, the Bible mentions that Lydia sold purple (either the dye or the fabrics colored purple).(Acts 16:14, 15) 14 And a woman named Lydʹi·a, a seller of purple from the city of Thy·a·tiʹra and a worshipper of God, was listening, and Jehovah opened her heart wide to pay attention to the things Paul was saying. 15 Now when she and her household got baptized, she urged us: "If you have considered me to be faithful to Jehovah, come and stay at my house." And she just made us come.
You might be referring to Lydia, in the New Testament, who was a seller of purple. She is referred to in 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." I don't believe that there is a reference to a worker of purple in the Old Testament. At least searching for "worker" and "purple" doesn't give any results.