HELP!

okay, i figured out how to put CAD stuff into NL. now here's my problem. in CAD my wall is black. that;s the color i want. however, when i put it in nl, it's red. i don't change the color, and i don't have anything red in nl. the coaster track and supports are both black. i'm so lost.

Make some adjustments to it and make sure you've placed teh textures in their proper spots.