Having this same problem currently. It seems to be when there is no light data on the skin facing the camera and the background is bright like the one in your pics.
Sorry about that, I don't own a VR and have no way of testing it. Anyone is free to edit and reupload a version that works correctly with VR or give me some tips on how to fix it maybe.
This is my first environment and upload created in unity and for the use a Virt-A-Mate creators and users alike.
Important: This environment contains baked lighting that will not reflect on to the character model. I've placed a few lights in the scene but you will need to know how to use the...