Minor Pure Soul

Blake looked at the three soul orbs that floated around him. They all looked quite similar to each other, but they were very unfamiliar to Blake. The souls that he used to see were the completely dark souls that would come out of a demon's body. But right now, three souls were floating above human's dead bodies and their primary color was white.

And Blake thought their primary color was white because they didn't only have the white color.

Just like he had seen earlier with the other police officer's souls, the white orbs that floated around him all had dark spots on them. Although the number of black spots found on their souls differs from each other.