With the original belt Wayne displayed a certain sense of arrogance, with a golden belt to going along with yellow chest emblem.
Wayne later rethought the belt completely, starting with the color. The black belt was dark as the Batsuit itself, which at this point had a dark bronze color behind the emblem instead of yellow. He could then blend in with the shadows completely.
- "We didn't like his yellow belt very much. So we made it black. FREAK OUT. Absolute freak out. It's in the fucking newspapers, "he doesn't got a yellow belt!" Straight back, "you've got to revert to a yellow belt on him, they've heard about it and they're very upset." So I said, "brass is yellow. Yellow enough." So we made it brass. All the yellow in Batman became brass. And the Batman fans bought it."
- ―Anton Furst, 1:23:34[src]