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All colors made me happy: even gray.
My eyes were such that literally they
Took photographs. Whenever I'd permit,
Or, with a silent shiver, order it,
Whatever in my field of vision dwelt--
An indoor scene, hickory leaves, the svelte
Stilettos of a frozen stillicide--
Was printed on my eyelids' nether side
Where it would tarry for an hour or two,
And while this lasted all I had to do
Was close my eyes to reproduce the leaves,
Or indoor scene, or trophies of the eaves.

-Vladimir Nabokov, "Pale Fire"