Current Stage: Pick accent colors for individual apps, if that's all you want out of this tool (Excluding iMac colors), feel free to test drive Beta 2 now (and make sure to give me feedback!).
The final release will be open source, supporing macOS 13.0 Ventura and later. Now when will the final release happen? Good luck.
https://mahdi.jp/apps/accents - Really cool app to use the iMac's accent colors on any Mac with a simple UI
https://alexwlchan.net/2022/changing-the-macos-accent-colour/ - Changing system accent colors with UserDefaults and getting all apps to change automatically (Massive resource for me)
https://georgegarside.com/blog/macos/imac-m1-accent-colours-any-mac/ - Information about what exactly allows using the iMac's accent colors on any Mac
https://apple.stackexchange.com/questions/466985/is-there-a-way-to-set-macos-accent-color-on-a-per-app-basis - Setting accent colors on a per-application basis using the defaults command
You all have my official stamp of approval.
This project used to be called Aquifer, but I since renamed it to Aquira.... since why not, I guess.
This project truthfully is a stopgap for something better that either myself or hopefully someone else will write. I already have plans to use the general knowledge I'm learning with Aquira to make a future, more general-purpose tool that kinda acts as a per-app version of System Settings, called Preferential right now, but that'll be something for another day.