I already searched and what I found was abour exporting png's... which has nothing to do with what I want to do
I'd like to know if it's possible in Inkscape to change the background to something other than white
NOT the canvas, but the background
I'd like it to look kinda like a "transparent" Layer

so the page would be "inside" that transparent indicating background
kinda like this

I hate the background being the same color as the canvas...
if I could do that or the opposite
like only the canvas transparent
looking something like this

though I'd rather have complete control over this, if it's possible
I really don't like losing all the white objects in the background
all help is very much appreciated