I'm rereading here and I'm wondering if there might be a misunderstanding of what we're talking about (my fault if so, likely, hehe). When done on the nif, in the BSEffectShaderProperty, the Greyscale Texture is the grad, then the Source Texture is used to define where the color on the grad is and how brightly the color shows. The whiter the grey in the Source Texture, the lower on the grad texture. The blacker, the higher on the grad. The opaqueness is how much is shows/bright it glows. So, if you're colors are too orange (high on that partiicualr grad) and you want more green, lighten the source texture up a bit til you get where you want (lower on the grad). ...iirc, of course, it's been a while. ...and if I'm understanding what's being asked, hehe.