Alpha texture and lighting issue with ALM

[Devriv]

Hello everyone. :cathappy:

On the sides of a building I have two planes with alpha textures.  I set up the lighting, but once I turn the lights on, the alpha textures become gray.  They are supposed to remain white.  To add to my confusion, at times one of the textures does display correctly.

This is happening with my Advanced Lighting Model (ALM) on.  When I turn off ALM, the textures display correctly. 

When ALM is disabled:



 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

When ALM is enabled (my viewer’s default):  :catsad:



 

 

Edit:

Fairly certain that the problem is solved. I should have posted this in the Building and Texturing forum.  There is a light source inside the building too (the red ball in the image below), and when I turned that off, the textures looked normal.  Which is very strange, as I have another light source to the back of the decals (the blue ball).