How I choose the color for new qubes

I thought someone could be interested in how I choose the color for a new qube. It follows some of the defaults of a fresh Qubes OS install.

black: offline vault
gray: almost offline, connected only by qvm-connect
purple: online, 100% open-source software, no cloud services
blue: online, 100% open-source software, trusted cloud services
yellow: online, contains trusted closed-source software
orange: online, contains untrusted closed-source software or I use it for untrusted cloud services
green: firewall
red: untrusted, like sys-net and sys-usb

What trusted/untrusted means: do you trust the cloud service, website, or closed-source software not to spy on your activities and sell your data?

Examples:

multimedia appVM: I use it to listen to Spotify, which spies on me, so its color is orange.
email appVM: I trust my email provider, so the color of this VM is blue.
surfer appVM: I don't log in into any any web services in this qube, and all data is deleted on browser close, so the color is purple
sys-vpn: I trust my VPN provider, and I use open-source to connect to it, so the color is blue.
debian-12-xfce-nonfree templateVM: contains the closed-source Spotify client, which I distrust, so the color is orange.
cloud appVM: where I log into several cloud services like ChatGPT or Google which sell my data; orange color
social appVM: for social media; orange color
banking appVM: forced KYC that continuously gets hacked and leaked; orange color