Variable: display-time-mail-face
display-time-mail-face is a customizable variable defined in
time.el.gz.
Value
nil
Documentation
Face to use for display-time-mail-string.
If display-time-use-mail-icon is non-nil, the image's
background color is the background of this face. Set this to
make the mail indicator stand out on a color display.
This variable was added, or its default value changed, in Emacs 22.1.
Probably introduced at or before Emacs version 21.1.
Source Code
;; Defined in /usr/src/emacs/lisp/time.el.gz
;; This business used to be simpler when all mode lines had the same
;; face and the image could just be pbm. Now we try to rely on an xpm
;; image with a transparent background. Otherwise, set the background
;; for pbm.
(defcustom display-time-mail-face nil
"Face to use for `display-time-mail-string'.
If `display-time-use-mail-icon' is non-nil, the image's
background color is the background of this face. Set this to
make the mail indicator stand out on a color display."
:group 'mode-line-faces
:group 'display-time
:version "22.1"
:type '(choice (const :tag "None" nil) face))