default-frame-alist vs. initial-frame-alist

[Tjernlund]

I have to set both lists below to make the change in colors effective. I think 
it should be
enough with default-frame-alist. This is on both 24.3 and 24.4

;; Color settings.
(setq default-frame-alist '((background-color . "#333333") (foreground-color . 
"White") (cursor-color . "White")))
(setq initial-frame-alist default-frame-alist)

  Jocke