Theme
/authoring/slate/theme
PreviewSlate previewslate
The Theme Editor — "Brand the generated portal: logo, colours, typefaces and colour mode. Changes apply to this preview until the site API can persist them." Without a scope: "Choose a project and version to brand its portal theme."
| Control | Choices |
|---|---|
| Logo | Upload logo · SVG or PNG (up to about 340 KB), Remove logo |
| Primary color | Cyan, Indigo, Violet, Emerald, Red, Amber, Slate, or a custom colour |
| Accent color | Cyan, Violet, Emerald, Orange, or custom |
| Body typeface | Inter (default), Geist, DM Sans, Lato, IBM Plex Sans |
| Code typeface | JetBrains Mono, Geist Mono, Fira Code, Cascadia Code |
| Default color mode | Light, Dark, System |
| Custom CSS overrides | Up to 20,000 characters; warns on unbalanced braces and a closing style tag |
The Live theme preview renders the portal in a sandboxed frame as you change them.
Save is disabled in this preview — "Saving a portal theme needs the Slate site API… Your changes apply to this preview only." — so a theme lasts for the session. Leaving with changes warns first.