On “Slide background menu” we have a wrong flow. I accidentally changed background colour of a whole presentation several times and I knew about existence of “template/this slide” at the top.
The way it is expected to work:
When you press “slide background option” it is expected that you want to change “slide background” of current page.
When you select background color then you select whether to apply it on a current page or on a whole presentation ( current page is selected by default ).
The experience of changing slide background should be improved