Update: I have realize that the brown Eco-Flo in question that I used was actually Hi-Lite, not the dye!
I used it on my first quick project, an iphone 5 case, and I got a nice dark coat that kept coming off when I rubbed on the Satin Sheen. I was an UGLY faded brown and you could see the HIDEOUS water stains from where I molded the sides. I followed Ian Atkinson's Iphone 4 case tutorial on Youtube. I used WAY more water than he did, I got it all up on the front face of the case. I probly shoulda soaked the whole thing.
Anyway, I tried using rubbing alcohol to strip it down some and then I used my black fiebings LeatherColors (the politically correct Low VOC CA dye). It looks better, kinda blotchy though and some of the brown shows through in small areas.