I was in a group and couldn’t get an answer from the other DH. I’m running a Shadow Impale Build and when my Perma Shadow Power is enabled I have a green graphic for the tendrils. This other DH had purple tendrils. Just wondering why the difference in color. I’m sure it’s something simple.
Thank You
The color is determined by the SP rune on your skill bar. The different runes have different colors, e.g. Gloom is green. Pick whatever rune suits your look.
Very cool. I’ll go change the color now. Thanks!
Purple (Shadow Glide) is the only correct answer.
Sorry, but I really couldn’t resist: 
(from one of my favorite shows)
I usually run with the green wings from completing all the set dungeons, so I use the green Shadow Power wings, so it looks like I have double the number of green tendrils on my DH.
As a huge B5 fan I had to give a like.