In solid mode with textured solid checked, A model will show the material color until any face on the model is "attached to an image" (have the face selected, and open an image in the UV image editor). The model will then turn white. Is there any way to revert this? I'm using internal.
Here we are in textured solid mode. The green cube has a green material. I selected the green cube, enter edit mode, select a face, then change the image in the UV image editor. A UV map that I never created appears, and the cube turns white:
How can I make it green again while still showing the texture on the checkered cube