Allow voxel plots to be colored by material
Allow voxel plots to be colored by material

paulromano/openmc,amandalund/openmc,shikhar413/openmc,liangjg/openmc,amandalund/openmc,amandalund/openmc,paulromano/openmc,mit-crpg/openmc,mit-crpg/openmc,walshjon/openmc,liangjg/openmc,liangjg/openmc,shikhar413/openmc,smharper/openmc,shikhar413/openmc,walshjon/openmc,smharper/openmc,smharper/openmc,smharper/openmc,mit-crpg/openmc,liangjg/openmc,walshjon/openmc,paulromano/openmc,mit-crpg/openmc,amandalund/openmc,walshjon/openmc,shikhar413/openmc,paulromano/openmc