What adjectives describe Black Beauty?

"I was a dull black, so he called me Darkie.."

I was now beginning to grow handsome; my coat had grown fine and soft, and was bright black. I had one white foot and a pretty white star on my forehead. I was thought very handsome; my master would not sell me till I was four years old; he said lads ought not to work like men, and colts ought not to work like horses till they were quite grown up.

“First-rate, sir,” answered John; “he is as fleet as a deer, and has a fine spirit too; but the lightest touch of the rein will guide him.