I'm trying to set the background color of a graph to be black while the background color where the labels are placed should be white. Unfortunately I've only been able to set a single backgorund color. Let me explain better with some images. What I actually have is this:
black graph background, black labels background and white label text.
What I'm trying to achieve is this:
black graph background, white labels background and black label text (this image has been modified in an image editor).