Setting colour for comments for light and dark theme

[goncholden <goncholden@protonmail.com>]

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.

> --
>
> Manuel Giraud