Integrate Firefox's Figma libraries
Issue
Mozilla have generously provided us with guest access to their Figma libraries for Firefox. Since they're on a separate team from us, it doesn't look like we can "add" these libraries to our files in the same manner we can with internal libraries.
Current options
Option 1 We can export each library as a .fig, and re-import it into our Figma team, however it will drop the associations between each file in the process (e.g. color styles from the Styles file that get reused in design files).
Option 2 Alternatively, we can copy/paste individual components across where needed. This on the other hand will keep our libraries decentralized since there'll be styles/components/icons from Firefox in Mozilla's files and the same elements, but from Tor Browser, on Tor's files.
With both approaches, we'd lose updates from the canonical libraries on Mozilla's end in the process too.
Chosen approach
Since both solution options result in losing live updates from Mozilla, we've decided to go with option 1: importing Mozilla's files to our Figma team and adjusting variables and instances. This way, we'll have our own centralized libraries, making it easier to find elements (e.g. colors and components) and reducing inconsistencies that come with detached components.