4 adjectives to describe indigoes

Artificial indigo and other dyes can be produced in a laboratory much cheaper than they can be grown in the fields, and, naturally, people will buy the low-priced article, Twenty years ago India had practically a monopoly of the indigo trade, and 2,000,000 acres of land were planted to that product, while the value of the exports often reached $20,000,000.

When the wainscoting was finished, he had the moulding and high plinths painted in indigo, a lacquered indigo like that which coachmakers employ for carriage panels.

Not till then did the girl turn aside her face, as though studying the shore, which now melted in a soft, half-liquid band as black as coal-tar, above the luminous indigo of the river.

The pressure is enormous, and all the water remaining in the mall is pressed through the cloth and perforations in the press-box till nothing but the pure indigo remains behind.

4 adjectives to describe  indigoes