Steel Dragon, Yellow Dragon

Too chromatic for the metal dragons, too metallic for the chromatic dragons. Here we have the misfits. The outlaws. The rebels.

• Chromatic dragon - Forgotten Realms Wiki - Wikia — Chromatic dragons are also very commonly evil.
• Steel Dragon (Dungeons & Dragons) - Dragons - Wikia — The sociable steel dragons prefer the company of humanoids to that of other dragons. Their reasons range from admiration to greed.