title: Showing a model with vertex painted colours in unity
body: <p>I'm trying to get a model imported into unity from blender showing the vertex colours. I have a shader(shows vertex colours) which I've applied to the model but still just plain white.
  I know the shader works because I managed to get it working on another blender model, however I just don't know what the settings were used in the blender file.</p>
  
  <p>Here's how I'm currently doing it:
  I create a model in MagicaVoxel and is coloured. I then exported it as a .obj file. 
  I then import this into blender. If I switch into "texture" mode, I can see all the vertex colours on the model.
  I save this blender file as just "xxx.blend".</p>
  
  <p>Then in Unity, I drag the .blend file over, and it imports the model. I apply a material and the vertex paint shader to the model on the stage. </p>
  
  <p>Model should start showing the vertex paint colours, but it does not. Just remains white.</p>
  
  <p>Does anyone have any ideas?</p>
  
  <p>Cheers</p>