Pecan Dyeing Part 2

I finished dyeing with the pecan dye.It didn't seem to be doing much so I added vinegar and waited another day or two. It started to look really dark, but when I rinsed it, all the dark dye washed out. Maybe I should have used a mordant. 

I was disappointed in the results, but it is a pretty shade of orangy brown. I'll try it again later. I still have a stash of pecans.