e.g.

Here is an example of how qubes color codes each domain:

https://www.qubes-os.org/attachment/wiki/QubesScreenshots/r2b2-kde-three-domains-at-work.png

We could consider each organisation a domain. Perhaps each mmt multisig treasure map would be drawn on a radical fluorescent pink parchment. I imagine protozoa would be some funky oil-on-water-rainbow background color.