I've been using the default theme with a white background.
I'd like to try out a few of the nicer dark colored themes out there, but every time I do,
I get stuff like you see below.
This is in a block of PHP code..
I cannot figure out which item to change in Preferences,
I've tried everything under PHP and none of my items have a white background.
Where can I find out more about how this system works and how to customize it?