colour in poetry

Keats remarkable description of a woman transformed into a snake

'She was a gordian shape of dazzling hue,
Vermilion-spotted, golden, green, and blue;
Striped like a zebra, freckled like a pard,
Eyed like a peacock, and all crimson barr’d;
And full of silver moons, that, as she breathed,
Dissolv’d, or brighter shone, or interwreathed
Their lustres with the gloomier tapestries— '

Keats - Lamia