You sure don't believe in reading anything or searching before making a post do you?
From the big announcement on the front page:
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And from a post today - just a few posts below yours when someone asked pretty near the same thing a few hours ago:
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All the color themes you see here are available for download as well in the CSS forum.
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So yes, they are all available for download in the Stylesheet forum. There's even one called "desert-classic" which replicates the old desert sheet.