full screen mode background color

I know that DT’s full screen mode has been discussed at length in various posts, but I haven’t found an answer to this (hopefully) simple question: If I am writing in full screen mode at 50%, is there any way for the entire background color to be white (or whatever color)? As it is, everything outside of the writing area is black, creating a two-toned background. Obviously this isn’t a problem if the writing background is set to black, but I want something different. I’m hoping there is a setting that I haven’t found, but so far I’ve come up short.

That’s not (yet) possible.