Burned green and orange, framed by the coloured stone
In which sad light a carved dolphin swam.
Further description of the scene carved on the roof in coloured stone:
The burning copper plus salts absorbed by the driftwood make the fire multi-coloured, like the jewels and perfume bottles; the multiplicity is even reminiscent of the variegated perfumes.
Note that a fire fueled by “sea-wood” casts light in which a dolphin swims.
The light is particularly sad if, as the previous line suggests, the fire is a reference to Dido’s funeral pyre.
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