Hi, a new theme appeared in my site, it’s called “Foundation”, I never installed it, do you know something about that ? Thanks !

I believe Foundation is the new name for the Default theme and will have replaced it if you hadn’t modified Default. @jordan.vidrine can correct me if I’m wrong.

Ah yes thanks for the explanation !

This is what I see in a site that was deployed this morning: [image] However, there is only “Default” in my themes: [image]

This change is in flux over the next few days new installs will see “Foundation” and “Horizon” in themes which are “core themes”. Foundation is the same default theme you have today. These are themes that will always be there in the UI, are shipped with Discourse and can not be edited outside of adding components etc.. (no html/css overrides)

I made a quick fix so that system themes like “Foundation” and “Horizon” and their associated color palettes are not presented in the UI. At least at this stage, when they should still be hidden :slight_smile: https://github.com/discourse/discourse/pull/33267

What happens if I rename the Default theme to Foundation? I have disabled the Default theme as an experiment, and thus cannot pick Default from the theme switcher now. However Foundation is still available as a choice. Currently on 3.5.0.beta8-dev(fcb943fa70).

Foundation 主题？

产品支持

kris.kotlarek (Kris) 2025 年6 月 20 日 06:04 6

我做了一个快速修复，这样系统主题（如“Foundation”和“Horizon”）及其关联的调色板就不会显示在 UI 中。
至少在这个阶段，它们仍然应该被隐藏

话题		回复	浏览量
Introducing core themes Announcements	6	621	2025 年7 月 15 日
What’s your go-to user theme on Discourse? General	10	287	2026 年10 月 27 日
Whats the default theme? Product Support	1	776	2023 年9 月 1 日
Changing Color Palette - Light (default) Product Support	5	716	2023 年7 月 27 日
When will the Foundation theme be updated for all forums? Product Support	3	272	2026 年6 月 11 日

Foundation 主题？

相关话题