 CONT: During the scene in which Secretary Forsythe talks with  President Van Buren about the dire political consequences of the  Amistad Africans being acquitted and suggests dismissing the jury  and replacing the judge, there is a bowl of water on the desk at  which Van Buren is sitting. During the conversation, the water in  the bowl inexplicably changes from clear to dark (presumably its  purpose is to clear out the unused ink from quill