Stable Greens?

[Nighthawk]

I have had a problem with Feibings green. The spirit dye turns black, and the oil die turns into an ugly pea soup yellow. I have thought about using Angelous greens, but their dyes are more expensive. Are they worth it? Is there any such thing as a stable green dye? Not only have I had this problem with my own work- the company I work for has had the same problem. Any thoughts and ideas would be great. Green is a rather popular color.

[dirtclod]

I use green some times and mix half and half or two to one with denatured alcohol two times the alcohol and it works fine.