mh-face-background

mh-face-background is a Lisp macro in `mh-compat.el'.

(mh-face-background FACE &optional FRAME INHERIT)

Return the background color name of face, or nil if unspecified.
See documentation for `back-foreground' for a description of the
arguments FACE, FRAME, and INHERIT.
This macro is used by Emacs versions that lack an INHERIT argument,
introduced in Emacs 22.