Setting colour for comments for light and dark theme

[goncholden]

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‐‐‐‐‐‐‐ Original Message ‐‐‐‐‐‐‐

On Tuesday, February 1st, 2022 at 11:28 AM, goncholden 
<goncholden@protonmail.com> wrote:

> On Tuesday, February 1st, 2022 at 10:34 AM, Manuel Giraud 
> manuel@ledu-giraud.fr wrote:
>
> > Hi,
> >
> > Maybe you need a default match. Watch out untested code ahead:
> >
> > --8<---------------cut here---------------start------------->8---
> >
> > (defvar annotation-chroma
> >
> > '((dark . ((low . "#8300E0") (mid . "#AA33FF") (high . "#C370FF")))
> >
> > (light . ((low . "#C16BFF") (mid . "#AA33FF") (high . "#8000DB")))
> >
> > (default . ((low . "red") (mid . "green") (high . "blue"))))
> >
> > "Colour contrast for comments, indigo on dark and light background.")
> >
> > (defun annotation-typeface (chroma)
> >
> > "Set the foreground colour for comments.
> >
> > CHROMA Intensity Key used for setting colour of comments."
> >
> > (let* ((colors annotation-chroma)
> >
> > (levels
> >
> > (pcase (car custom-enabled-themes)
> >
> > ('modus-operandi (alist-get 'light colors))
> >
> > ('modus-vivendi (alist-get 'dark colors))
> >
> > (_ (alist-get 'default colors)))))
> >
> > (face-remap-add-relative 'font-lock-comment-face
> >
> > `(:foreground ,(alist-get chroma levels)))))
> >
> > --8<---------------cut here---------------end--------------->8---
>
> I wonder if there is any way that colours change whether one is using a light 
> or dark theme. Is the light and dark setting inherent to emacs, or inherent 
> to the theme? For instance the default can still check if the theme uses a 
> light or dark background. Better still, the annotation colours could be set 
> up for light and dark background irrespective of the particular instance of 
> modus-themes. Meaning that the colours are set for any theme one could be 
> using.

Have tried using  (frame--current-backround-mode nil)  but this gives

Symbol's function definition is void: frame--current-backround-mode

I am using Emacs 27.1

> > --
> >
> > Manuel Giraud