Nif Alpha Shader Problem for light textures

[DarkRavage]

Hello,

 

I'm making a lingerie mod and I have some problems with using white transparent textures in some light source. For some reason the white texture with alpha becomes grey in some light source and becomes shiny in other dim light source (like rainy weather). However, black textures on the same mesh works just fine.

 

I uploaded some pics to demonstrate. I tried editing alpha flags in Nif and play with shader flags too. But I'm stuck and I can't figure out how. Can anyone help me?