I honestly don't recall the Teflon part. I remember that some were white, some were black, and some were green. The thing that impressed me the most was that it was so neatly tied with zip-ties. Those guys really took a lot of care and pride in their work. Like all A&P folks, they knew lives depended on their work. The harness also had what were probably copper disk thigies that terminated each wire. Even those were very uniformly cut and crimped.
As a lowly enlisted swine who spent a lot of time at a hundred knots high above earth and water, I respected and valued that kind of precision and care. The units I served in lost a lot of guys to helo crashes over the years. Good work was therefore appreciated.