Texture problems with Mixamo and Unity

I'm a big fan of Mixamo, because it provides great animations for characters. However, I'm having a problem with importing textures. Whenever I import a model with a texture attached, or import a zip file, or group together files and import them, my character always ends up blank. If I could just get them textured in Mixamo, I could easily extract the textures in Unity. I tried importing the blank model and then attaching the texture file (png) but something about how Unity renders textures is preventing it from working. If anyone knows how to get the textures working on Mixamo or Unity, please let me know.