Which 비단잉어(코이) breeds come in 검은색?

Club breed standards describe 검은색 for the 코이.

비단잉어(코이) color

검은색

Solid black pigment. In birds often with a green or purple sheen; on skin, legs, beak, comb and tongue the dark pigment some standards call for.

8 비단잉어(코이) breeds list 검은색. It is in a club standard for 4 breeds.

Breed	JNPA
코이산케	표준 (“black imprints (urushizumi)”)
코이쇼와	표준 (“black body (black background)”)
코이벳코	표준 (“black imprints shaped like spots”)
코이우츠리	표준 (“black body (black background)”)

How 검은색 can appear or change over an animal's life.