I really don't understand it - all cats are brilliant.
Our male black cat moved himself in when we were away.
He came in through our cat flap. He was a stray, intact tom and had sprayed on EVERYTHING! The carpets, the beds, the sofas - everything had to be professionally cleaned. He'd also ransacked the place - we initially thought we'd been robbed!
Anyway, we tried to encourage him out but he was very scared so we called the RSPCA. A man came and caught him. He was severely underweight, flea-ridden & obviously had been stray for a while. The man rang some rescue centres and there wasn't any room and he said that, being black and male it was unlikely that he'd be re-homed anyway, so he would take him to be put to sleep! 
I was not having that, and said that we'd happily keep him.
6 months on, de-flead, neutered, wormed & well-fed and he's the most gorgeous lovable cat ever, I can't remember our home without him. He gets on very well with our other 'white & tabby' cat(who just celebrated her 1st birthday) and 'friendly local cat' who is also black. Poppy often spends ages licking his face. 
The vet thinks he's around three years old. He follows me everywhere and always comes when called.
He is not sleek and elegant though - he walks funny - the vet thinks that he may have been kicked or hit by a car at some point 
Oh, and he's been named Sherlock (can you guess what our surname is?).
I adore my black cat and wouldn't have him any other way.