Background color of header / off canvas menu

I am once again apologizing for a silly, basic question. I’m using the gallery theme. I’ve got my site the way I want it to look on desktop. On mobile, I can’t seem to adjust the top bar and off canvas menu color on mobile / iOS. I can surf the customizer, and change lots of colors, but there doesn’t seem to be an easy thing to click to change these colors.

When I go to customizing -> Menus and click the bottom right icon in the left window so that I get mobile view, I can see the problem

I am probably missing something super easy.

Thanks!

I found the problem. It’s apparently my eyes. Ugh. Thanks anyway.