When I paste a text inside quotation marks into Emacs+AUCTeX, AUCTeX formats it with a soft red color (see the screenshot below at the first line).

I like this color. However, I'm using csquotes package to handle (multilingual) quotations marks. The \enquote commands (provided by csquote package) use another color. I don't like this last color (see screenshot at the second line). With this ugly soft green color, I cannot find quickly quotation inside a big document.

How can I change csquotes default color to use AUCTeX default one?

The screenshot:

enter image description here

(This screenshot uses French quotation marks but it hasn't any influence on my question.)

There is a bunch of settings about fontification in the csquotes.el file but I didn't see any reference to colors:

  ;; Fontification
   (when (and (featurep 'font-latex)
          (eq TeX-install-font-lock 'font-latex-setup))
     (font-latex-add-keywords '(("DisableQuotes" "")
                ("RestoreQuotes" ""))
     (font-latex-add-keywords '(("enquote" "*{")
                ("foreignquote" "*{{")
                ("hyphenquote" "*{{")
                ("textcquote" "*[[{[{")
                ("foreigntextcquote" "*{[[{[{")
                ("hyphentextcquote" "*{[[{[{")
                ("textquote" "*[[{")
                ("foreigntextquote" "*{[[{")
                ("hyphentextquote" "*{[[{")
                ("blockquote" "[[{")
                ("foreignblockquote" "{[[{")
                ("hyphenblockquote" "{[[{")
                ("blockcquote" "[[{[{")
                ("foreignblockcquote" "{[[{[{")
                ("hyphenblockcquote" "{[[{[{"))
     (font-latex-add-keywords '(("setquotestyle" "[{")
                ("MakeOuterQuote" "{")
                ("MakeInnerQuote" "{")
                ("MakeAutoQuote" "*{{")
                ("MakeForeignQuote" "*{{{")
                ("MakeHyphenQuote" "*{{{")
                ("MakeBlockQuote" "{{{")
                ("MakeForeignBlockQuote" "{{{{")
                ("MakeHyphenBlockQuote" "{{{{")
                ("DeclareQuoteStyle" "[{[[{[{[{[{")
                ("DeclareQuoteAlias" "[{{")
                ("DeclareQuoteOption" "{")
                ("DeclarePlainStyle" "{{{{")
                ("SetBlockThreshold" "{")
                ("SetBlockEnvironment" "{")
                ("SetCiteCommand" "{"))

;;; csquotes.el ends here

This is a general approach, so you can use it to customize any other faces:

  1. Place your cursor under the word whose color you want to change and M-xdescribe-char.
  2. You will be prompted with some information. Check There are text properties here: section, and copy the face link text. (something like font-lock-keyword-face for example)
  3. M-xcustomize-face RET and paste the previously copied text (for instance font-lock-keyword-face in this case) RET.
  4. Modify the color and click/enter Apply and Save.
  • Thank you for describe-char. When wanting to inspect text properties in the past I've always written a snippet in scratch-buffer! No more! – PuercoPop Mar 20 '15 at 22:54

Take a look at font-latex-user-keyword-classes, e.g.

(setq font-latex-user-keyword-classes
      '(("quotes" '("enquote" "*{") font-latex-string-face command))))

, as described in the info manual (info "(auctex) Fontification of macros"). Note that changing this variable may require a restart of Emacs. Also, I don't know what happens in case of multiple definitions, i.e. by this variable and by your package.

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