Stacking two auto-layouts in z axis - possible?

I’ve been scratching my head for a while and can’t find a solution. I need to stack two auto-layouts on top of each other because I want each one to contain a symbol, - one background one foreground.

I know you can do a background fill but I need to pull in an image library and be able to swap these instances each with different coloured themes so I don’t want to change this manually.

Is this possible at all?

apologies if this is something you already tried, but this sounds like a case where absolute positioning could help?