7.2.18 DIY Make mail citations and headers more or less colorful

This is one of our practical examples to override the semantic colors of the Modus themes (Stylistic variants using palette overrides). In this section we show how to change the coloration of email message headers and citations. Before we show the code, this is the anatomy of a message:

From: Protesilaos <info@protesilaos.com>
To: Modus-Themes Development <~protesilaos/modus-themes@lists.sr.ht>
Subject: Test subject
--- Headers above this line; message and citations below ---
This is some sample text

> > Older quote
> Newer quote

We thus have the following:

;; Reduce the intensity of mail citations and headers
(setq modus-themes-common-palette-overrides
      '((mail-cite-0 cyan-faint)
        (mail-cite-1 yellow-faint)
        (mail-cite-2 green-faint)
        (mail-cite-3 red-faint)
        (mail-part olive)
        (mail-recipient indigo)
        (mail-subject maroon)
        (mail-other slate)))

;; Make mail citations more intense; adjust the headers accordingly
(setq modus-themes-common-palette-overrides
      '((mail-cite-0 blue)
        (mail-cite-1 yellow)
        (mail-cite-2 green)
        (mail-cite-3 magenta)
        (mail-part magenta-cooler)
        (mail-recipient cyan)
        (mail-subject red-warmer)
        (mail-other cyan-cooler)))

;; Make all citations faint and neutral; make most headers green but
;; use red for the subject lie so that it stands out
(setq modus-themes-common-palette-overrides
      '((mail-cite-0 fg-dim)
        (mail-cite-1 fg-alt)
        (mail-cite-2 fg-dim)
        (mail-cite-3 fg-alt)
        (mail-part yellow-cooler)
        (mail-recipient green-cooler)
        (mail-subject red-cooler)
        (mail-other green)))

Reload the theme for changes to take effect.