I find it easiest to just treat people as people. It's really no deeper than that.
For example, this is most I say on one of my character's appearances during their introduction:
He too adorned a black suit, as instructed, but it was modified it to suit his tastes. His suit jacket was unbuttoned, white shirt never tucked, and he went sans tie more often than not. It was a shame too; otherwise, there were elements of him that could be considered attractive. At the very least, I did acknowledge his olive complexion, slate hue eyes, oval facial structure, and ebony hair he combed straight back as being inviting to some extent.
That's it. It's as a much apart of their introduction as the color of their hair or eyes and such. It's only a big deal if you make it a big deal.
As for describing words, eh, just do whatever sounds right. Here, example if I was writing someone who was black, I'd say charcoal black, chocolate if I felt it worked well for description (as you can clearly see from avatar, I'm black myself and don't give a damn) though I will say it's cliche, ebony, espresso, mahogany or whatever.