And there on the house’s threshold, sudden as lightning-strike, stood Thetis. Her hair shone black against the white marble of the palace. Her dress was dark, the colour of an uneasy ocean, bruising purples mixed with churning greys. Somewhere beside her there were guards, and Peleus too, but I did not look at them. I saw only her, and the curved knife’s blade of her jaw.
The song of Achilles - Madeline Miller, pg. 103