Well, consider what Tokoyami is lighting his room with: UV blacklights. To Tokoyami and Dark Shadow, this room may not be dark and dingy at all. Birds have special cones in their eyes that let them see UV light easily. They can see things like rodent urine trails, and invisible patterns on the feathers of birds that look dull and drab to us. As far as Tokoyami may be concerned, his room is brightly lit with colored mood lighting.
