Hi Eric, thanks for the reply.
Am Montag, den 25.07.2016, 15:38 +0100 schrieb Eric S Fraga: > > #+begin_src emacs-lisp :results none > (setq org-format-latex-options '(:foreground "white" :background > "black" :scale 3 :html-foreground "Black" :html-background > "Transparent" :html-scale 1.0 :matchers ("begin" "$1" "$" "$$" "\\(" > "\\[")) > org-latex-create-formula-image-program 'imagemagick > org-tree-slide-heading-emphasis t > ) > #+end_src > Well, thats what I tried first. It didn't have any effect when the pgfplots and tikz packages were loaded. Something seems to overwrite the font color, I assume. Regards Uli