VOXFORMAT: Colors of a red/green Qubicle model become darker as the voxel resolution increases

[hkunz]

There is a certain Qubicle file (.qb) here that loads with incorrect colors. It should have mostly green and red colors but shows up as brown and brown-green colors. Here's the sample when converting this .qb to .obj using voxconvert:

The colors seem to get darker as the voxel resolution increases

out.zip