Because of his youth and inexperience, it was implied that Bell's soul is obvious. When the slaves and Arry in Freya's Souls were melancholy or had a great concern on their mind, they became gray and clouded like smoke. But when they laughed or smiled, they returned to their original color. This theory is supported by the fact that when Arry was alive, he showed no interest in becoming invisible, which would have required him to learn how. Instead, he chose to behave as normally as possible despite having a slave behind him. This shows that even though Arry was old and blind, he still had a sense of humor and did not take himself too seriously. Another example is when the slaves are working on the fields and someone comes along and scares them, their actual color will change from gray to black. However, if they stay in one place for too long of a time, they will turn white again because they are now wasting energy being afraid. This also shows that they can see light even though they are occupied at the moment because otherwise they would be unable to detect movement. In conclusion, since Arry was able to see and laugh even though he was old and blind, this proves that his soul was visible just like anyone else's.