Infield Color Mod Help

[dipper]

Hi. I am new to the game and to the site. I am a pretty good modder and hope to be able to contribute to your site. I am, however, having difficulty altering the color of the infield and base path dirt. For example, I am unable to create an astroturf looking field. It always comes out white or brown. No matter what textures I alter and no matter what color. I have only tried with AT&T Park, but I assume I will get the same result with others.. Is it a hardcoded shading? Or am I missing something? Thanks for the help.

Edit. Hello, again. Please someone, help. I am trying to make a 'tron" environment field. I cannot figure out the infield dirt, though. It is driving me crazy. I have been at it for hours.

I should not have said "good modder"> I am a good artist and good at altering images. I am a terrible "modder". The technical aspect evades me at the moment. I am unsure of a few things in 3ds max but I am getting the hang fairly quickly.