docs/wiki/3.09-Theming.md
Super Productivity includes built-in themes and can install local CSS theme files. Themes change presentation only; they do not change or sync task data.
The app ships with these themes, selectable under Settings → General → Theme:
You can also color-code individual projects and tags with custom primary, accent, and warn colors.
Project, tag, Today, and Inbox theme settings can also use separate background
images for light and dark mode. The Darken/lighten background image for better
contrast slider and the Blur background image slider are shown when at
least one background image is set. The blur slider defaults to 0px. The
Disable colored background tint setting is shown when at least one mode has no
background image and still uses the app's tinted background.
.css file. Installed themes are stored locally in IndexedDB and appear in the same theme list as the built-ins.--surface-1, --surface-2, --ink, and --ink-on-channel. Missing tokens produce a warning and inherit the app defaults.data: URLs, @import, src(), and files larger than 500 KB are rejected.Electron also retains the legacy optional styles.css file in the user data folder. It is unvalidated trusted-local CSS and can load resources, so use only CSS you control. See [[3.06-User-Data]] for its location. The in-app installer is preferred because installed themes can be selected and removed from Settings.
.css file and install it from Settings → General → Theme.styles.css behavior.