yeah yeah i know this is from a long time ago, but it might be able to help you with future endevors. If by white you mean the wire fram try reloading the materials, if that doesn't work the file path must be incorrect.

If by white you mean they are all glowing white try mat_specular 0. Sometimes textures are loaded as fullbright and that command usually fixes most all of them.

Again sorry for necro, I only write for what it's worth...