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From: Eli Zaretskii <eliz@gnu.org>
Newsgroups: gmane.emacs.help
Subject: Re: Background color in terminal
Date: Tue, 08 May 2007 22:00:05 +0300
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In-reply-to: <m2irb3rw1u.fsf@sl392.st-edmunds.cam.ac.uk> (message from Leo on
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> From: Leo <sdl.web@gmail.com>
> Date: Tue, 08 May 2007 19:48:29 +0100
> 
> It seems Emacs is assuming background types (dark or light) according to
> terminal types.

Only on character (i.e. text-mode) terminals, since there's no
standard API to query them for their default background color.

> Now I have one terminal screen-256color. Emacs thinks it is dark
> background when it is actually light background. How can I correct this?

I think you want to customize the variable frame-background-mode,
which see.