I love badger and furnace hackles on all sorts of flies even on EHC as it provides the appearance of body segmentation but on Sulphur parachutes it's killer. (I should hit delete but I won't).
Anyway; many of you watch Shawn's videos and will notice the black or dark wing case on Sulpher nymphs & emergers he posted a while back....
I swear that my parachutes with a furnace or badger hackle that make a seemingly black wing case where the hackle wraps the post out fish all my other sulphur dries..... especially if I have a trailing shuck made from SLF.
Try it on a few and turn some heads in your direction.