Set these under components.FileCard in your token file, or pass them to ThemeScope to change one region of the page.
FileCard has no component tokens of its own. It reads the global tokens below. Set one under components.FileCard to change it for FileCard and FileCard.List only, or at the top level to change every component. The file-type icon colors are fixed and are not tokens.
Global Tokens
The global tokens FileCard reads. Set one under components.FileCard to change it for FileCard only, or at the top level to change every component.