I've had this problem when the clothes in question had a blue-toned bump map rather than a regular grey-toned one. I've also had the problem when the item was missing a texture. I think you might be able to export the textures via SimPE, but I'm not sure.
yes you can use SimPE to export textures. I have a few recolors in my game for private use only of course that I made and I used the wizards of SimPE to eport the textures