The background around the Layout Editor in Android Studio is dark grey. I think it used to be white. Anyway, I would like to make it white again, but I can't find the setting. The reason I want to change it is so that I can make nicer looking print screen images to use on StackOverflow or app descriptions.
Note: I'm not talking about changing the theme or the code editor colors. These questions have already been answered here:
Android Studio 3.0 has a Screenshot menu item. Right click the design area and choose Save Screenshot.
From there you can make a screenshot with a transparent background.