Well actually, the dwarves were created by the smith god Aulë deep in darkness under the mountains of Middle-Earth, made to be strong and unyielding. I don’t think he cared much about their reaction to the sun, it stands to reason their skin would mirror the materials used by the god that created them - clay and stone. A darker skin tone makes more sense to me frankly.
Well actually, the dwarves were created by the smith god Aulë deep in darkness under the mountains of Middle-Earth, made to be strong and unyielding. I don’t think he cared much about their reaction to the sun, it stands to reason their skin would mirror the materials used by the god that created them - clay and stone. A darker skin tone makes more sense to me frankly.