I intend for my first Dovahkiin to be a thoroughly Nordified Redguard named Elvíss Early-Crow.
Nevertheless, a default "Black Nord" is just silly. Nords developed their burly physiques and cold-weather-resistance from quite literal eons of hard-scrabble living in the frozen tundra. I hate to be so 'oh-oh-oh-oh' with physiology that might not even apply to Nirn, but very dark skin is actually detrimental in colder climes because of the potential for fatal vitamin D deficiencies. Humans naturally produce endogenous vitamin-D when exposed to direct sunlight, but more northerly lands receive much less starshine, so the people living there naturally develop (over time) pale skin so as to absorb every last available photon. Assuming this is true of Tamriel, you simply wouldn't see natural populations of melanin-dense Nords. Skyrim is dim country.
Now I just have to ask: What isn't there to like about Redguards? I mean besides the horrible female VA? They're fast, strong, and even discovered nuclear-fission-swords!