According to Bugreports https://bugs.launchpad.net/ubuntu/+source/openoffice.org/+bug/159315 https://bugs.launchpad.net/ubuntu/+source/openoffice.org/+bug/588551 The Font and Background Color "Automatic" Depend on Theme settings which I believe to be confusing and wrong. This seems to apply primarily to Ubuntu/other Linux variants. I reproduced it in 12.04 A Fix seems to be to set the Colors in Extras->Settings->LibreOffice->Appearance "Font Color" and "Background Color" to non automatic - black and white. This would be a premanent solution if "automatic" is actually ment to behave that way.
isnt this a dupe/already fixed with fdo#353665/lp#628105? https://bugs.freedesktop.org/show_bug.cgi?id=35365 https://bugs.launchpad.net/ubuntu/+source/libreoffice/+bug/628105 please check with LibreOffice 4.0.x
*** This bug has been marked as a duplicate of bug 35365 ***