I just published a theme I’ve been refining for a while, now open source under MIT: a clean, modern look built around translucent, frosted-glass surfaces (header, sidebar, search) with a purpose-built light and dark color scheme — no hardcoded colors, everything tied to Discourse’s CSS custom properties, so it works out of the box with automatic light/dark switching.
Repo: terraboss/discourse-terraglass
Features
- Frosted glass surfaces — header, sidebar/hamburger menu, and the header search field/dropdown are semi-transparent with a backdrop blur, opacity and blur strength both configurable
- Separate, purpose-built light and dark color schemes (not just an inverted single scheme), checked against WCAG AA contrast for text and UI elements
- X/Twitter-style onebox link previews with a hairline border and rounded corners
- Etiquette-style flag/arrow-shaped tags
- Fixed 16:9 video embeds on every device
- Zebra-striped topic list with a subtle hover state
- Configurable corner rounding across buttons, cards, modals and inputs
- Accessible focus outline that uses the scheme’s own text color, so it stays visible in both light and dark mode
- Everything above is a theme setting — turn off or tune whatever you don’t want
Installation
Customize → Themes → Install → From a git repository:
https://github.com/terraboss/discourse-terraglass
That also gives you one-click “Check for updates” going forward.
Update
The backdrop-filter blur issue I originally flagged below is now fixed — thanks to awesomerobot for pointing out the actual cause (details here). Sidebar, hamburger menu and search panel now all blur correctly.
Feedback welcome, happy to take feature requests or bug reports.
