meeh pm TheElement
he knows about this kind of things.

i asked him i got him on msn, he sayd i should use cyan but that didnt work :$

I believe that your original colors of the flame, makes it to where It can't be green. I tried out a lot of base colors, and got yellow where green should have came.

the element says i need cyan (licht blue) but nothing changes than :o

To make it acid you need to make the color of the particle the opposite of acid, its as easy as painting acid in photoshop then apply the negative filter over it.

That would work if his flame would be black, but since it's not that doesn't work.

I don't think you can recolor that flame to green.