The material in question varies from translucent white on the tips through to black at the base for the longer ones and shorter whisker's tend to be a more solid black colour.
They are stiff and make nice bug tails. I had seen horse hair wound as a body material, so why not whisker?
Probably because it splits when you try to flex it through too tight of a curve..... usually right at the point of colour change!

There may be a method like soaking that will prevent the splitting, I will experiment and see what I can come up with. The whisker's seem to be a cross between the consistancy of hair and fingernail in make up, like hair on the tips and harder like fingernail toward the base.
This one shows the variation of colour you can achieve, #14 standard length hook shank with a light dun hackle.

These two are on #12 2X long and dubbed thorax. The fly on the left I waxed the whisker and touch dubbed (too heavy) before wrapping.
