How does Blender deal with partially textured .obj object? I have a .obj file that specifies a partially textured object. More specifically, not all vertices have UV coordinates (that is, I have more v entries than vt entries in my .obj).

The face entries f look like this.

f 2045/631 2164/742 2119/700
f 2119/700 2164/742 2165/743
f 2259/834 2120/701 2165/743
f 2165/743 2120/701 2119/700
f 2260 2261 2259
f 2259 2261 2120
f 2205 2262 2124


As you can see, some faces are textured, while others are not.

My model looks reasonable in MeshLab -- it has some faces with texture and some textureless faces. 

However, when I import the .obj file into Blender, the faces that are supposed to be textureless have a texture, which is the entire texture map. Why is this happening, and how can I stop this behavior?
My solution to this would be to move all the uv coordinates of the non uv-mapped faces to the very same point.

Having a few pixels set to the color that you want your mesh to be and putting your uvs there instead can be a way to get rid of unwanted colors.