48-bit colours?

Posted by grawity on Super User See other posts from Super User or by grawity
Published on 2010-03-20T17:22:39Z Indexed on 2010/03/20 17:31 UTC
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x11

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color

Quite often, especially in X11-related things (X resources, Roxterm themes, etc) I see colours specified as 48-byte numbers: #2e2e34343636, #cccc00000000 instead of the usual 24-bit #2e3436 and #cc0000. What are the extra bits used for?

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