More visible mini-buffer prompt face

["Lennart Borgman (gmail)" <lennart.borgman@gmail.com>]

I do not know if I dare to make a suggestion right now. However this is 
a simple suggestion that will not break anything (except peoples mind 
perhaps ;-) ).

I have been working with some code using popup menus. That is a 
situation where I sometimes have to look at the popup menu and sometimes 
to the minibuffer. I noticed that even though I am quite used to Emacs 
now I sometimes am a bit slow to realize that Emacs is prompting me in 
the minibuffer.

I wonder if it would not be better to have a more visible face for the 
minibuffer prompt by default. My suggestion would be using a visible 
background color (some not too sharp yellow perhaps).

There is another situation where I also would prefer some more visible 
notice and that is when I get an error message and do not have enabled 
debug on error (this will be the normal user situation). I would prefer 
some colored face for the error messages too.

This is maybe the wrong time to suggest it. Or maybe it is not. The 
reason for my suggestion now is that Emacs way of displaying the things 
above is a bit surprising to new users. And a new release might 
encourage new users to try Emacs.

Is this something we can do? Is it useful at all?