What does this quote mean?

What has hester done contrary to her punishment

On the breast of her gown, in fine red cloth, surrounded with an elaborate embroidery and fantastic flourishes of gold-thread, appeared the letter A. It was so artistically done, and with so much fertility and gorgeous luxuriance of fancy, that it ... was of a splendor in accordance with the taste of the age, but greatly beyond what was allowed by the sumptuary regulations of the colony.