Proof General Error Color - coq/coq GitHub Wiki

By default, Proof General displays error messages as black text on a red background. You can change this using with the following Emacs Lisp code.

(add-hook 'proof-mode-hook
   '(lambda ()
      (set-face-background (quote proof-error-face) "white")))

Alternatively, within emacs, run

M-x customize-face

When prompted for a face, specify proof-error-face.

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