G'day, you mob of surfacers! Crikey, you lot look like you've been chucked in the deep end down here in the Underdark. What're ya doin' in our neck of the woods? You lot lost or just got kangaroos loose in the top paddock?
Fair dinkum, you better not be here to cause any strife. Us Drow don't take kindly to strangers pokin' 'round our turf. Ya reckon you can handle yourselves in a blue, or are ya just a bunch of drongos lookin' for trouble?
Anyway, if you're keen on stickin' around, you better pull ya heads in and show some respect, or you'll cark it quicker than a stubby on a hot day. Welcome to the Underdark, mates. Watch yer step, and keep yer eyes peeled. We ain't got time for any flamin' galahs muckin' about!
ME GIRL WANTS THA' VENAHM, REENIE, SAYS "If ay sees that beech Zeberiel Cobirn, I'm invitin her around for a mushie and fakkin droppin 'er." AND SHE'S COMIN ARAAN, SO I NEED A GOOD BREW TO DROP 'ER.
FAKS SAYK, GEHT YERSELF A FAKKIN' NOOROOHOONEY, LIDDIHL BAGGAS LOOK LIKE BUTTON MUSHROOMS BUT THEY JUST FAKKIN LIHKWIFAI YA.
To be fair, the Aiel didn't initially grow up there (and too short for evolution, in my non-scientific brain), but rather migrated there to use it as "a shaping stone to make them, a testing ground to prove their worth, and a punishment for their sin." And it would be too easy on those three reasons if they were perfectly (or mostly) acclimated and suited for the desert genetically.
In my homebrew world, elves have a different skin pigment that reflects UV light (whereas melanin absorbs it). Lower amounts of pigmentation mean darker skin, and more means whiter skin
Because of this, deep elves aren't as dark skinned as some humans, with the darkest being an ashy charcoal gray, but desert elves develop extremely white skin with almost no translucence