Text color in visual editor

I guess the solution is a simple one, only I cannot find it..

I changed the color of my website bodytext from black into white. As a result of that, the text in the visual editor is now white too. Because there the background is white as well, there is noting to be seen…

Whats the trick to get the editortext back to black – and of course the website-text remaining white?

Jos

The page I need help with: [log in to see the link]