Subject: Re: bug#2459: 22.2.1: global-font-lock-mode does not turn off colors: ido.el, minibuffer prompt

From: Richard M Stallman <[email-masked]>
Date: Wed, 25 Feb 2009 10:53:29 -0500

These features, and several other places that use colour, are not
    implemented using font-lock, so toggling global-font-lock-mode has no
    effect. In this specific case, you can set ido-use-faces and customize
    the minibuffer-prompt face.

This sort of problem is easy to fix; we already have a mechanism for
it.  The mode should set `font-lock-face' properties instead of `face'
properties.  That will make the right thing happen.