I’m unable to change my layout color from grey to black. I’ve tried what it’s saying to do with the help desk and it doesn’t work. 

I am also trying to turn off printable area and paper background in my layout tab. 
Here is a picture of what it currently looks like. 

With windows it’s just right click and under options. All I’m seeing in my pretences menu is to change the paper space color, not turning it off.