Canvas is traditionally white. You are not traditional. - Gray.
Or maybe you are? Blood runs thicker than water. - He's technically got equine blood though he hides it. (Hybrid; species ref)
Do you ever wonder what would become of you? - Once the plague finds out, they're not likely to be too pleased.
Your name is Robert - Belongs to Plague (secret society - Robert Paulson/Fight Club reference. Fight Club being a secret society. ;D)