FoL, Those are some very interesting-looking jigs. I'm guessing that you fish the weighted spinner jig on the bottom, with the non-weighted jig tied above?
The dark bodies look like peacock herl. I have found that the herl produces a LOT more fish than chenille or yarn, although the herl tears up a lot quicker. Fortunately it's an easy re-wrap and herl is pretty cheap. BTW, an orange head/peacock herl body/pheasant tail has been my best overall producer.