change default color in editor

I'll answer myself... For the benefit of the search functions.

i found the solution.
Set whatever fontsettings you'd like in /ckeditor/content.css in the body{} tag
Note: just a refresh of the page isn't enough to show the changes. I had to clear the cache ([ctrl][shift][del]) in Firefox and then refresh. That workes.

Exact this last note, empty cache and refresh, is the tricky part. I tried over and over. Normally, a css file is refreshed when you hit the refresh button of your browser. Apperantly this doesn't function like you'de expect in ckeditor. Could have something to do with java related issues.

Anyhow; it works. Thanks for nothing