[Orgmode] org-tag-faces does not work for me

[Wanrong Lin]

Hi,

I updated org to the latest (6.15f) and try to use the new org-tag-faces 
feature, but it does not work me.

I have settings like this:

(setq org-tag-faces
     '(("TODAY" . (:foreground "#C00000"))
       ("APPT"  . (:foreground "#C00000"))
       ("NEXT"  . (:foreground "#C00000"))))

It has no effect at all, regardless whether I have "org-tag" customized 
or not.

Another thing I noticed is: in the search result of "tags-todo", all my 
tags are in lower cases, while in regular agenda view, the cases are 
preserved. I found the change of tag cases annoying. Is this a bug or is 
there a way to turn that behavior off?

Thanks a lot if anyone can help.

Wanrong