According to Fogg, there have been several variations on this theme. This is one of the four dressings that Pritt lists.
Dark Watchet
Hook: Daiichi 1640, #14 (this is a larger size than normally recommended)
Working thread: Pearsall's Gossamer, purple
Hackle: Jackdaw neck feather
Body: Mole fur sparsely dubbed on purple and hot orange silk threads twisted together and palmered up shank

Some of the same morons who throw their trash around in National parks also vote. That alone would explain the state of American politics. ~ John Gierach, "Still Life with Brook Trout"