Enable rainbow mode in LaTeX buffers.

modules/lang/latex/config.el

@@ -85,6 +85,8 @@
       (TeX-global-PDF-mode t)
       (TeX-PDF-mode t)
       (visual-line-mode +1))
+    ;; Enable rainbow mode after applying styles to the buffer
+    (add-hook 'TeX-update-style-hook #'rainbow-delimiters-mode)
     (when (featurep! :feature spellcheck)
       (add-hook 'LaTeX-mode-hook #'flyspell-mode))
     ;; Default language setting.