How face inheritance works

[goncholden]

How does inheritance of font-lock-comment-delimiter-face work with 
font-lock-comment-face ?

Do I need to set the foreground colour always after setting 
font-lock-comment-face?. Or can I also set
attributes to font-lock-comment-delimiter-face before calls to setting values 
to font-lock-comment-face ?
Will any attribute overriding happen to font-lock-comment-delimiter-face when 
font-lock-comment-face
is called?
(face-remap-add-relative 'font-lock-comment-face `(:foreground "#FFFF00"))

;; delimiter-face inherits from font-lock-comment-face

(

if

(

eq

'dark (

frame-parameter

nil

'background-mode))
  (

set-face-attribute

'font-lock-comment-delimiter-face

nil

:foreground

"#00FF00"

)
  (

set-face-attribute

'font-lock-comment-delimiter-face

nil

:foreground

"#00FFFF"

) ))