checking for light or dark background

[goncholden]

‐‐‐‐‐‐‐ Original Message ‐‐‐‐‐‐‐

On Wednesday, February 2nd, 2022 at 12:56 PM, Eli Zaretskii <eliz@gnu.org> 
wrote:

> Date: Wed, 02 Feb 2022 09:26:02 +0000
>
> From: goncholden via Users list for the GNU Emacs text editor 
> help-gnu-emacs@gnu.org
>
> I want to determine whether emacs is using a light or dark background. This 
> could be set up by emacs itself
>
> or by a theme.

Like this:

(frame-parameter nil 'background-mode)

This evaluates to either light or dark.  Very neat compared to what I was 
playing with initially.