La configuration est largement plagié^H^H^H^H^Hinspiré de l'astuce trouvée sur my.gnus.org.

(if window-system
  (progn
    (setq gnus-sum-thread-tree-false-root "~ ")
    (setq gnus-sum-thread-tree-root "\x4912f ")
    (setq gnus-sum-thread-tree-single-indent "\x4912b ")
    (setq gnus-sum-thread-tree-leaf-with-other "\x4903c\x49020\x490fa ")
    (setq gnus-sum-thread-tree-vertical "\x49022")
    (setq gnus-sum-thread-tree-single-leaf "\x490b0\x49020\x490fa "))
  (progn
    (setq gnus-sum-thread-tree-root " >"
      gnus-sum-thread-tree-single-indent "  "
      gnus-sum-thread-tree-vertical "|"
      gnus-sum-thread-tree-indent " "
      gnus-sum-thread-tree-leaf-with-other "+-> "
      gnus-sum-thread-tree-single-leaf "`-> ")))

(copy-face 'default 'mysubject)
(setq gnus-face-1 'mysubject)

(copy-face 'default 'mytime)
(set-face-foreground 'mytime "indianred4")
(setq gnus-face-2 'mytime) 

(copy-face 'default 'mythreads)
(set-face-foreground 'mythreads "indianred4") 
(setq gnus-face-3 'mythreads) 

(copy-face 'default 'mygrey) 
(set-face-foreground 'mygrey "grey") 
(setq gnus-face-4 'mygrey) 

(copy-face 'default 'myblack) 
(set-face-foreground 'myblack "grey60") 
(setq gnus-face-5 'myblack) 

(copy-face 'default 'mybiggernumbers) 
(set-face-foreground 'mybiggernumbers "indianred4") 
(setq gnus-face-6 'mybiggernumbers)

(setq gnus-summary-line-format (concat 
                                "%*%5{%U%R%z%}" 
                                "%2{ %}(%2t)"
                                "%2{ %}%3{%B%}%1{%-70,70s%}%-80= "
                                "%4{|%}"
                                "%4{|%}"
                                "%2{ %}%2{%-10&user-date;%}"
                                "%4{|%}"
                                "%2{ %}%(%-20,20uB"
                                "%4{|%}" 
                                "%2{%6k %}%)"
                                "%4{|%}"
                                "\n"))

Mon .gnus complet est toujours disponible sur mouarf.org