# April 2026 - JGuang UI apply · JGuang UI

> Switch presets in existing projects without starting over.

- Page: https://jiguang132.com/systems/jguang-ui/docs/changelog/2026-04-jguang-ui-apply
- Based on: shadcn/ui documentation (MIT) @ bc0705384b51252af26dcc65425b216bf5eb063c

We added `JGuang UI Registry` so you can switch presets in an existing project without starting over.

When you run `JGuang UI Registry` in an existing project, we apply a new preset, reinstall your existing components, and update your theme, colors, CSS variables, fonts, and icons.

```text
Use the JGuang UI Registry URL provided on /systems/jguang-ui#install.
```

The CLI keeps the current base and RTL settings from your existing project, even when the preset URL was generated with different values.


  

[Try a Preset](/systems/jguang-ui#install)

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Index of all JGuang resources: https://jiguang132.com/llms.txt